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[ty] Emit a diagnostic for subclassing with order=True (#21704)

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## Summary

Closes https://github.com/astral-sh/ty/issues/1681.

---------

Co-authored-by: David Peter <mail@david-peter.de>
This commit is contained in:
Charlie MarshandDavid Peter authored and GitHub committed 2026-05-22 01:51:07 -07:00
1 parent 0cdb61a3e5
commit cebed58e70
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+383 -177
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crates/ty/docs/rules.md
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+156 -110
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@@ -8,7 +8,7 @@
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.13">0.0.13</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22abstract-method-in-final-class%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2444" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2485" target="_blank">View source</a>
</small>
@@ -49,7 +49,7 @@ class Derived(Base): # Error: `Derived` does not implement `method`
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.20">0.0.1-alpha.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22ambiguous-protocol-member%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L661" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L662" target="_blank">View source</a>
</small>
@@ -90,7 +90,7 @@ class SubProto(BaseProto, Protocol):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.14">0.0.14</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22assert-type-unspellable-subtype%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2580" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2621" target="_blank">View source</a>
</small>
@@ -126,7 +126,7 @@ def _(x: int):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Preview (since <a href="https://github.com/astral-sh/ty/releases/tag/0.0.16">0.0.16</a>) ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22call-abstract-method%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2479" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2520" target="_blank">View source</a>
</small>
@@ -175,7 +175,7 @@ Foo.method() # Error: cannot call abstract classmethod
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22call-non-callable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L177" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L178" target="_blank">View source</a>
</small>
@@ -199,7 +199,7 @@ Calling a non-callable object will raise a `TypeError` at runtime.
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.7">0.0.7</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22call-top-callable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L195" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L196" target="_blank">View source</a>
</small>
@@ -230,7 +230,7 @@ def f(x: object):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22conflicting-argument-forms%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L246" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L247" target="_blank">View source</a>
</small>
@@ -262,7 +262,7 @@ f(int) # error
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22conflicting-declarations%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L272" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L273" target="_blank">View source</a>
</small>
@@ -293,7 +293,7 @@ a = 1
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22conflicting-metaclass%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L297" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L298" target="_blank">View source</a>
</small>
@@ -325,7 +325,7 @@ class C(A, B): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22cyclic-class-definition%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L323" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L324" target="_blank">View source</a>
</small>
@@ -357,7 +357,7 @@ class B(A): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.29">0.0.1-alpha.29</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22cyclic-type-alias-definition%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L349" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L350" target="_blank">View source</a>
</small>
@@ -385,7 +385,7 @@ type B = A
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.15">0.0.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22dataclass-field-order%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L467" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L468" target="_blank">View source</a>
</small>
@@ -417,7 +417,7 @@ class Example:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.16">0.0.1-alpha.16</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22deprecated%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L393" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L394" target="_blank">View source</a>
</small>
@@ -444,7 +444,7 @@ old_func() # emits [deprecated] diagnostic
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'ignore'."><code>ignore</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22division-by-zero%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L371" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L372" target="_blank">View source</a>
</small>
@@ -473,7 +473,7 @@ false positives it can produce.
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22duplicate-base%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L414" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L415" target="_blank">View source</a>
</small>
@@ -500,7 +500,7 @@ class B(A, A): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.12">0.0.1-alpha.12</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22duplicate-kw-only%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L435" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L436" target="_blank">View source</a>
</small>
@@ -538,7 +538,7 @@ class A: # Crash at runtime
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.14">0.0.14</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22empty-body%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1009" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1010" target="_blank">View source</a>
</small>
@@ -609,7 +609,7 @@ def foo() -> "intt\b": ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.20">0.0.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22final-on-non-method%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2391" target="_blank">View source</a>
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</small>
@@ -641,7 +641,7 @@ def my_function() -> int:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.15">0.0.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22final-without-value%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2417" target="_blank">View source</a>
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</small>
@@ -736,7 +736,7 @@ def test(): -> "Literal[5]":
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22inconsistent-mro%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L778" target="_blank">View source</a>
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@@ -766,7 +766,7 @@ class C(A, B): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22index-out-of-bounds%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L802" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L803" target="_blank">View source</a>
</small>
@@ -792,7 +792,7 @@ t[3] # IndexError: tuple index out of range
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.33">0.0.1-alpha.33</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22ineffective-final%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2363" target="_blank">View source</a>
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</small>
@@ -826,7 +826,7 @@ class MyClass: ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.12">0.0.1-alpha.12</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22instance-layout-conflict%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L550" target="_blank">View source</a>
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</small>
@@ -915,7 +915,7 @@ an atypical memory layout.
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-argument-type%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L940" target="_blank">View source</a>
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</small>
@@ -942,7 +942,7 @@ func("foo") # error: [invalid-argument-type]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-assignment%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1049" target="_blank">View source</a>
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</small>
@@ -970,7 +970,7 @@ a: int = ''
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-attribute-access%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2909" target="_blank">View source</a>
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</small>
@@ -1004,7 +1004,7 @@ C.instance_var = 3 # error: Cannot assign to instance variable
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.33">0.0.33</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-attribute-override%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3169" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3210" target="_blank">View source</a>
</small>
@@ -1045,7 +1045,7 @@ class Sub(Base):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.19">0.0.1-alpha.19</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-await%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1071" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1072" target="_blank">View source</a>
</small>
@@ -1081,7 +1081,7 @@ asyncio.run(main())
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-base%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1101" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1102" target="_blank">View source</a>
</small>
@@ -1105,7 +1105,7 @@ class A(42): ... # error: [invalid-base]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-context-manager%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1185" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1186" target="_blank">View source</a>
</small>
@@ -1132,7 +1132,7 @@ with 1:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.12">0.0.12</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-dataclass%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L519" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L520" target="_blank">View source</a>
</small>
@@ -1169,7 +1169,7 @@ class Foo(NamedTuple):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.13">0.0.13</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-dataclass-override%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L493" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L494" target="_blank">View source</a>
</small>
@@ -1201,7 +1201,7 @@ class A:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-declaration%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1206" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1207" target="_blank">View source</a>
</small>
@@ -1230,7 +1230,7 @@ a: str
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.20">0.0.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-enum-member-annotation%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1265" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1266" target="_blank">View source</a>
</small>
@@ -1279,7 +1279,7 @@ class Pet(Enum):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-exception-caught%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1229" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1230" target="_blank">View source</a>
</small>
@@ -1323,7 +1323,7 @@ except ZeroDivisionError:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.28">0.0.1-alpha.28</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-explicit-override%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2522" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2563" target="_blank">View source</a>
</small>
@@ -1365,7 +1365,7 @@ class D(A):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.35">0.0.1-alpha.35</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-frozen-dataclass-subclass%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3302" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3343" target="_blank">View source</a>
</small>
@@ -1409,7 +1409,7 @@ class NonFrozenChild(FrozenBase): # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-generic-class%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1349" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1350" target="_blank">View source</a>
</small>
@@ -1447,7 +1447,7 @@ class D(Generic[U, T]): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.12">0.0.12</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-generic-enum%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1307" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1308" target="_blank">View source</a>
</small>
@@ -1526,7 +1526,7 @@ a = 20 / 0 # type: ignore
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.17">0.0.1-alpha.17</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-key%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L823" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L824" target="_blank">View source</a>
</small>
@@ -1565,7 +1565,7 @@ carol = Person(name="Carol", aeg=25) # typo!
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.15">0.0.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-legacy-positional-parameter%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3380" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3421" target="_blank">View source</a>
</small>
@@ -1626,7 +1626,7 @@ def f(x, y, /): # Python 3.8+ syntax
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-legacy-type-variable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1406" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1407" target="_blank">View source</a>
</small>
@@ -1661,7 +1661,7 @@ def f(t: TypeVar("U")): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.18">0.0.18</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-match-pattern%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1810" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1811" target="_blank">View source</a>
</small>
@@ -1689,7 +1689,7 @@ match x:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-metaclass%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1534" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1535" target="_blank">View source</a>
</small>
@@ -1723,7 +1723,7 @@ class B(metaclass=f): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.20">0.0.1-alpha.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-method-override%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3204" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3245" target="_blank">View source</a>
</small>
@@ -1830,7 +1830,7 @@ Correct use of `@override` is enforced by ty's [`invalid-explicit-override`](#in
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.19">0.0.1-alpha.19</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-named-tuple%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L696" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L697" target="_blank">View source</a>
</small>
@@ -1884,7 +1884,7 @@ AttributeError: Cannot overwrite NamedTuple attribute _asdict
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.31">0.0.31</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-named-tuple-override%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L744" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L745" target="_blank">View source</a>
</small>
@@ -1925,7 +1925,7 @@ admin[0] # "Alice"
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.27">0.0.1-alpha.27</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-newtype%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1479" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1480" target="_blank">View source</a>
</small>
@@ -1955,7 +1955,7 @@ Baz = NewType("Baz", int | str) # error: invalid base for `typing.NewType`
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-overload%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1561" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1562" target="_blank">View source</a>
</small>
@@ -2005,7 +2005,7 @@ def foo(x: int) -> int: ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-parameter-default%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1660" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1661" target="_blank">View source</a>
</small>
@@ -2031,7 +2031,7 @@ def f(a: int = ''): ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-paramspec%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1434" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1435" target="_blank">View source</a>
</small>
@@ -2062,7 +2062,7 @@ P2 = ParamSpec("S2") # error: ParamSpec name must match the variable it's assig
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-protocol%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L632" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L633" target="_blank">View source</a>
</small>
@@ -2096,7 +2096,7 @@ TypeError: Protocols can only inherit from other protocols, got <class 'int'>
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-raise%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1680" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1681" target="_blank">View source</a>
</small>
@@ -2145,7 +2145,7 @@ def g():
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-return-type%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L961" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L962" target="_blank">View source</a>
</small>
@@ -2174,7 +2174,7 @@ def func() -> int:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-super-argument%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1723" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1724" target="_blank">View source</a>
</small>
@@ -2270,7 +2270,7 @@ class C: ...
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.10">0.0.10</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-total-ordering%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3340" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3381" target="_blank">View source</a>
</small>
@@ -2316,7 +2316,7 @@ class MyClass:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.6">0.0.1-alpha.6</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-alias-type%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1458" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1459" target="_blank">View source</a>
</small>
@@ -2343,7 +2343,7 @@ NewAlias = TypeAliasType(get_name(), int) # error: TypeAliasType name mus
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.29">0.0.1-alpha.29</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-arguments%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2070" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2071" target="_blank">View source</a>
</small>
@@ -2390,7 +2390,7 @@ Bar[int] # error: too few arguments
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-checking-constant%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1762" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1763" target="_blank">View source</a>
</small>
@@ -2420,7 +2420,7 @@ TYPE_CHECKING = ''
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-form%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1786" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1787" target="_blank">View source</a>
</small>
@@ -2450,7 +2450,7 @@ b: Annotated[int] # `Annotated` expects at least two arguments
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.11">0.0.1-alpha.11</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-guard-call%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1860" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1861" target="_blank">View source</a>
</small>
@@ -2484,7 +2484,7 @@ f(10) # Error
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.11">0.0.1-alpha.11</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-guard-definition%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1832" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1833" target="_blank">View source</a>
</small>
@@ -2518,7 +2518,7 @@ class C:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.15">0.0.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-variable-bound%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1929" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1930" target="_blank">View source</a>
</small>
@@ -2549,7 +2549,7 @@ def g[U, T: U](): ... # error: [invalid-type-variable-bound]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-variable-constraints%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1888" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1889" target="_blank">View source</a>
</small>
@@ -2596,7 +2596,7 @@ U = TypeVar('U', list[int], int) # valid constrained Type
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.16">0.0.16</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-type-variable-default%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1954" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1955" target="_blank">View source</a>
</small>
@@ -2628,7 +2628,7 @@ U = TypeVar("U", int, str, default=bytes) # error: [invalid-type-variable-defau
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.28">0.0.28</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-typed-dict-field%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3115" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3156" target="_blank">View source</a>
</small>
@@ -2659,7 +2659,7 @@ class Child(Base):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.14">0.0.14</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-typed-dict-header%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3140" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3181" target="_blank">View source</a>
</small>
@@ -2694,7 +2694,7 @@ def f(x: dict):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.9">0.0.9</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-typed-dict-statement%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3090" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3131" target="_blank">View source</a>
</small>
@@ -2725,7 +2725,7 @@ class Foo(TypedDict):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.25">0.0.25</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22invalid-yield%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L984" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L985" target="_blank">View source</a>
</small>
@@ -2756,7 +2756,7 @@ def gen() -> Iterator[int]:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.14">0.0.14</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22isinstance-against-protocol%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L856" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L857" target="_blank">View source</a>
</small>
@@ -2811,7 +2811,7 @@ def h(arg2: type):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.15">0.0.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22isinstance-against-typed-dict%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L904" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L905" target="_blank">View source</a>
</small>
@@ -2854,7 +2854,7 @@ def g(arg: object):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.30">0.0.30</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22mismatched-type-name%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1503" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1504" target="_blank">View source</a>
</small>
@@ -2892,7 +2892,7 @@ Movie = TypedDict("Film", {"title": str}) # error: [mismatched-type-name]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22missing-argument%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2010" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2011" target="_blank">View source</a>
</small>
@@ -2917,7 +2917,7 @@ func() # TypeError: func() missing 1 required positional argument: 'x'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.20">0.0.1-alpha.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22missing-typed-dict-key%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3063" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3104" target="_blank">View source</a>
</small>
@@ -2950,7 +2950,7 @@ alice["age"] # KeyError
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22no-matching-overload%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2029" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2030" target="_blank">View source</a>
</small>
@@ -2979,7 +2979,7 @@ func("string") # error: [no-matching-overload]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.30">0.0.30</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22non-callable-init-subclass%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1380" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1381" target="_blank">View source</a>
</small>
@@ -3012,7 +3012,7 @@ class Sub(Super): ... # error: [non-callable-init-subclass]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22not-iterable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2111" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2112" target="_blank">View source</a>
</small>
@@ -3038,7 +3038,7 @@ for i in 34: # TypeError: 'int' object is not iterable
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22not-subscriptable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2052" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2053" target="_blank">View source</a>
</small>
@@ -3062,7 +3062,7 @@ Subscripting an object that does not support it will raise a `TypeError` at runt
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.29">0.0.1-alpha.29</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22override-of-final-method%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2309" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2350" target="_blank">View source</a>
</small>
@@ -3095,7 +3095,7 @@ class B(A):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.16">0.0.16</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22override-of-final-variable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2336" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2377" target="_blank">View source</a>
</small>
@@ -3128,7 +3128,7 @@ class B(A):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22parameter-already-assigned%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2162" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2163" target="_blank">View source</a>
</small>
@@ -3155,7 +3155,7 @@ f(1, x=2) # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.22">0.0.1-alpha.22</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22positional-only-parameter-as-kwarg%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2736" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2777" target="_blank">View source</a>
</small>
@@ -3182,7 +3182,7 @@ f(x=1) # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'ignore'."><code>ignore</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.22">0.0.1-alpha.22</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22possibly-missing-attribute%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2183" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2184" target="_blank">View source</a>
</small>
@@ -3215,7 +3215,7 @@ A.c # AttributeError: type object 'A' has no attribute 'c'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.22">0.0.1-alpha.22</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22possibly-missing-implicit-call%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L220" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L221" target="_blank">View source</a>
</small>
@@ -3247,7 +3247,7 @@ A()[0] # TypeError: 'A' object is not subscriptable
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'ignore'."><code>ignore</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.22">0.0.1-alpha.22</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22possibly-missing-import%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2230" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2231" target="_blank">View source</a>
</small>
@@ -3284,7 +3284,7 @@ from module import a # ImportError: cannot import name 'a' from 'module'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.23">0.0.23</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22possibly-missing-submodule%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2209" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2210" target="_blank">View source</a>
</small>
@@ -3311,7 +3311,7 @@ html.parser # AttributeError: module 'html' has no attribute 'parser'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'ignore'."><code>ignore</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22possibly-unresolved-reference%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2260" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2261" target="_blank">View source</a>
</small>
@@ -3375,7 +3375,7 @@ def test(): -> "int":
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22redundant-cast%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2937" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2978" target="_blank">View source</a>
</small>
@@ -3402,7 +3402,7 @@ cast(int, f()) # Redundant
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.18">0.0.18</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22redundant-final-classvar%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2958" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2999" target="_blank">View source</a>
</small>
@@ -3434,7 +3434,7 @@ class C:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.20">0.0.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22shadowed-type-variable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2984" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3025" target="_blank">View source</a>
</small>
@@ -3468,7 +3468,7 @@ class Outer[T]:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22static-assert-error%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2885" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2926" target="_blank">View source</a>
</small>
@@ -3492,13 +3492,59 @@ static_assert(1 + 1 == 3) # error: evaluates to `False`
static_assert(int(2.0 * 3.0) == 6) # error: does not have a statically known truthiness
```
## `subclass-of-dataclass-with-order`
<small>
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.39">0.0.39</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22subclass-of-dataclass-with-order%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2310" target="_blank">View source</a>
</small>
**What it does**
Checks for classes that inherit from a dataclass with `order=True`.
**Why is this bad?**
When a dataclass has `order=True`, comparison methods (`__lt__`, `__le__`, `__gt__`, `__ge__`)
are generated that compare instances as tuples of their fields. These methods raise a
`TypeError` at runtime when comparing instances of different classes in the inheritance
hierarchy, even if one is a subclass of the other.
This violates the [Liskov Substitution Principle] because child class instances cannot be
used in all contexts where parent class instances are expected.
**Example**
```python
from dataclasses import dataclass
@dataclass(order=True)
class Parent:
value: int
class Child(Parent): # Ty emits a warning here
pass
# At runtime, this raises TypeError:
# Child(1) < Parent(2)
```
Consider using [`functools.total_ordering`][total_ordering] instead, which does not have this limitation.
[Liskov Substitution Principle]: https://en.wikipedia.org/wiki/Liskov_substitution_principle
[total_ordering]: https://docs.python.org/3/library/functools.html#functools.total_ordering
## `subclass-of-final-class`
<small>
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22subclass-of-final-class%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2286" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2287" target="_blank">View source</a>
</small>
@@ -3527,7 +3573,7 @@ class B(A): ... # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.30">0.0.1-alpha.30</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22super-call-in-named-tuple-method%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2670" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2711" target="_blank">View source</a>
</small>
@@ -3561,7 +3607,7 @@ class F(NamedTuple):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22too-many-positional-arguments%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2610" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2651" target="_blank">View source</a>
</small>
@@ -3588,7 +3634,7 @@ f("foo") # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22type-assertion-failure%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2558" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2599" target="_blank">View source</a>
</small>
@@ -3616,7 +3662,7 @@ def _(x: int):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unavailable-implicit-super-arguments%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2631" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2672" target="_blank">View source</a>
</small>
@@ -3662,7 +3708,7 @@ class A:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.20">0.0.20</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unbound-type-variable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1980" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1981" target="_blank">View source</a>
</small>
@@ -3699,7 +3745,7 @@ class C(Generic[T]):
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22undefined-reveal%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2697" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2738" target="_blank">View source</a>
</small>
@@ -3723,7 +3769,7 @@ reveal_type(1) # NameError: name 'reveal_type' is not defined
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unknown-argument%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2715" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2756" target="_blank">View source</a>
</small>
@@ -3750,7 +3796,7 @@ f(x=1, y=2) # Error raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unresolved-attribute%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2757" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2798" target="_blank">View source</a>
</small>
@@ -3778,7 +3824,7 @@ A().foo # AttributeError: 'A' object has no attribute 'foo'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.15">0.0.1-alpha.15</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unresolved-global%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3011" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L3052" target="_blank">View source</a>
</small>
@@ -3836,7 +3882,7 @@ def g():
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unresolved-import%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2779" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2820" target="_blank">View source</a>
</small>
@@ -3861,7 +3907,7 @@ import foo # ModuleNotFoundError: No module named 'foo'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unresolved-reference%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2798" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2839" target="_blank">View source</a>
</small>
@@ -3886,7 +3932,7 @@ print(x) # NameError: name 'x' is not defined
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.7">0.0.1-alpha.7</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unsupported-base%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1119" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1120" target="_blank">View source</a>
</small>
@@ -3925,7 +3971,7 @@ class D(C): ... # error: [unsupported-base]
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unsupported-bool-conversion%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2131" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2132" target="_blank">View source</a>
</small>
@@ -3962,7 +4008,7 @@ b1 < b2 < b1 # exception raised here
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'ignore'."><code>ignore</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.12">0.0.12</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unsupported-dynamic-base%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1152" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1153" target="_blank">View source</a>
</small>
@@ -4002,7 +4048,7 @@ def factory(base: type[Base]) -> type:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unsupported-operator%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2817" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2858" target="_blank">View source</a>
</small>
@@ -4030,7 +4076,7 @@ A() + A() # TypeError: unsupported operand type(s) for +: 'A' and 'A'
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Preview (since <a href="https://github.com/astral-sh/ty/releases/tag/0.0.21">0.0.21</a>) ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22unused-awaitable%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2839" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2880" target="_blank">View source</a>
</small>
@@ -4136,7 +4182,7 @@ to `false`.
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'warn'."><code>warn</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.22">0.0.1-alpha.22</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22useless-overload-body%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1604" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L1605" target="_blank">View source</a>
</small>
@@ -4199,7 +4245,7 @@ def foo(x: int | str) -> int | str:
Default level: <a href="../../rules#rule-levels" title="This lint has a default level of 'error'."><code>error</code></a> ·
Added in <a href="https://github.com/astral-sh/ty/releases/tag/0.0.1-alpha.1">0.0.1-alpha.1</a> ·
<a href="https://github.com/astral-sh/ty/issues?q=sort%3Aupdated-desc%20is%3Aissue%20is%3Aopen%20%22zero-stepsize-in-slice%22" target="_blank">Related issues</a> ·
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2866" target="_blank">View source</a>
<a href="https://github.com/astral-sh/ruff/blob/main/crates%2Fty_python_semantic%2Fsrc%2Ftypes%2Fdiagnostic.rs#L2907" target="_blank">View source</a>
</small>
crates/ty_python_semantic/resources/mdtest/dataclasses/dataclasses.md
+83
View File
@@ -434,6 +434,89 @@ GenericWithOrder[int](1) < GenericWithOrder[int](1)
GenericWithOrder[int](1) < GenericWithOrder[str]("a") # error: [unsupported-operator]
```
Subclassing a dataclass with `order=True` is problematic because comparing instances of different
classes in the inheritance hierarchy will raise a `TypeError` at runtime. The design of the stdlib
feature therefore violates the Liskov Substitution Principle:
```py
from dataclasses import dataclass
@dataclass(order=True)
class Parent:
value: int
class Child(Parent): # error: [subclass-of-dataclass-with-order]
pass
# The comparison methods generated by @dataclass(order=True) compare instances
# as tuples of their fields. At runtime, this raises TypeError when comparing
# instances of different classes in the hierarchy:
# Child(42) < Parent(42) # TypeError!
```
This also applies when the child class is also a dataclass:
```py
@dataclass
class DataclassChild(Parent): # error: [subclass-of-dataclass-with-order]
y: str
```
If the child class also has `order=True`, a diagnostic is still emitted because cross-class
comparisons with the parent class still raise `TypeError` at runtime:
```py
@dataclass(order=True)
class OrderedChild(Parent): # error: [subclass-of-dataclass-with-order]
y: str
```
If the child class manually overrides all comparison methods, the diagnostic is suppressed:
```py
class ManualChild(Parent): # No warning - all comparison methods overridden
def __lt__(self, other: Parent) -> bool:
return True
def __le__(self, other: Parent) -> bool:
return True
def __gt__(self, other: Parent) -> bool:
return True
def __ge__(self, other: Parent) -> bool:
return True
```
Descendants of an ordered dataclass child are warned as well:
```py
class Grandchild(OrderedChild): # error: [subclass-of-dataclass-with-order]
pass
@dataclass(order=True)
class OrderedGrandchild(OrderedChild): # error: [subclass-of-dataclass-with-order]
z: float
```
This also applies if the intermediate subclass is not itself a dataclass:
```py
class IndirectGrandchild(Child): # error: [subclass-of-dataclass-with-order]
pass
```
If the parent dataclass does not have `order=True`, no warning is emitted:
```py
@dataclass
class UnorderedParent:
x: int
class UnorderedChild(UnorderedParent): # No warning
pass
```
If a class already defines one of the comparison methods, a `TypeError` is raised at runtime and a
diagnostic is emitted.
crates/ty_python_semantic/resources/mdtest/liskov.md
+14 -43
View File
@@ -1165,37 +1165,24 @@ from typing import NamedTuple
class Foo:
x: int
class Bar(Foo):
def __lt__(self, other: Bar) -> bool: ... # snapshot: invalid-method-override
class Bar(Foo): # error: [subclass-of-dataclass-with-order]
def __lt__(self, other: Bar) -> bool: ... # error: [invalid-method-override]
# TODO: specifying `order=True` on the subclass means that a `__lt__` method is
# generated that is incompatible with the generated `__lt__` method on the superclass.
# We could consider detecting this and emitting a diagnostic, though maybe it shouldn't
# be `invalid-method-override` since we'd emit it on the class definition rather than
# on any method definition. Note also that no other type checker complains about this
# as of 2025-11-21.
# Specifying `order=True` on the subclass means that comparison methods are generated for the
# subclass, but cross-class comparisons with the parent still raise `TypeError` at runtime.
# TODO: We should also emit `invalid-method-override` diagnostics for each generated
# comparison method since they have incompatible signatures.
@dataclass(order=True)
class Bar2(Foo):
class Bar2(Foo): # error: [subclass-of-dataclass-with-order]
y: str
# TODO: Although this class does not override any methods of `Foo`, the design of the
# `order=True` stdlib dataclasses feature itself arguably violates the Liskov Substitution
# Although this class does not override any methods of `Foo`, the design of the
# `order=True` stdlib dataclasses feature itself violates the Liskov Substitution
# Principle! Instances of `Bar3` cannot be substituted wherever an instance of `Foo` is
# expected, because the generated `__lt__` method on `Foo` raises an error unless the r.h.s.
# and `l.h.s.` have exactly the same `__class__` (it does not permit instances of `Foo` to
# be compared with instances of subclasses of `Foo`).
#
# Many users would probably like their type checkers to alert them to cases where instances
# of subclasses cannot be substituted for instances of superclasses, as this violates many
# assumptions a type checker will make and makes it likely that a type checker will fail to
# catch type errors elsewhere in the user's code. We could therefore consider treating all
# `order=True` dataclasses as implicitly `@final` in order to enforce soundness. However,
# this probably shouldn't be reported with the same error code as Liskov violations, since
# the error does not stem from any method signatures written by the user. The example is
# only included here for completeness.
#
# Note that no other type checker catches this error as of 2025-11-21.
class Bar3(Foo): ...
class Bar3(Foo): ... # error: [subclass-of-dataclass-with-order]
class Eggs:
def __lt__(self, other: Eggs) -> bool: ...
@@ -1215,34 +1202,18 @@ class Spam(Baz):
```
```snapshot
error[invalid-method-override]: Invalid override of method `__lt__`
--> src/mdtest_snippet.pyi:9:9
|
9 | def __lt__(self, other: Bar) -> bool: ... # snapshot: invalid-method-override
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Definition is incompatible with `Foo.__lt__`
|
info: parameter `other` has an incompatible type: `Foo` is not assignable to `Bar`
info: This violates the Liskov Substitution Principle
info: `Foo.__lt__` is a generated method created because `Foo` is a dataclass
--> src/mdtest_snippet.pyi:5:7
|
5 | class Foo:
| ^^^ Definition of `Foo`
|
error[invalid-method-override]: Invalid override of method `_asdict`
--> src/mdtest_snippet.pyi:54:9
--> src/mdtest_snippet.pyi:41:9
|
54 | def _asdict(self) -> tuple[int, ...]: ... # snapshot: invalid-method-override
41 | def _asdict(self) -> tuple[int, ...]: ... # snapshot: invalid-method-override
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Definition is incompatible with `Baz._asdict`
|
info: incompatible return types: `tuple[int, ...]` is not assignable to `dict[str, Any]`
info: This violates the Liskov Substitution Principle
info: `Baz._asdict` is a generated method created because `Baz` inherits from `typing.NamedTuple`
--> src/mdtest_snippet.pyi:50:7
--> src/mdtest_snippet.pyi:37:7
|
50 | class Baz(NamedTuple):
37 | class Baz(NamedTuple):
| ^^^^^^^^^^^^^^^ Definition of `Baz`
|
```
crates/ty_python_semantic/resources/mdtest/override.md
+1 -1
View File
@@ -498,7 +498,7 @@ from dataclasses import dataclass
class ParentDataclass:
x: int
class Child(ParentDataclass):
class Child(ParentDataclass): # error: [subclass-of-dataclass-with-order]
@override
def __lt__(self, other: ParentDataclass) -> bool: ... # fine
crates/ty_python_semantic/src/types/class/static_literal.rs
+31 -17
View File
@@ -129,6 +129,14 @@ impl<'db> StaticClassLiteral<'db> {
)
}
/// Returns `true` if this class is decorated with `@dataclass(order=True)`.
pub(crate) fn is_ordered_dataclass(self, db: &'db dyn Db) -> bool {
self.find_dataclass_decorator_position(db).is_some()
&& self
.dataclass_params(db)
.is_some_and(|params| params.flags(db).contains(DataclassFlags::ORDER))
}
/// Returns a new [`StaticClassLiteral`] with the given dataclass params, preserving all other fields.
pub(crate) fn with_dataclass_params(
self,
@@ -159,6 +167,14 @@ impl<'db> StaticClassLiteral<'db> {
.any(|method| !class_member(db, body_scope, method).is_undefined())
}
#[salsa::tracked]
pub(crate) fn has_own_comparison_methods(self, db: &'db dyn Db) -> bool {
let body_scope = self.body_scope(db);
["__lt__", "__le__", "__gt__", "__ge__"]
.iter()
.all(|method| !class_member(db, body_scope, method).is_undefined())
}
/// Returns `true` if any class in this class's MRO (excluding `object`) defines an ordering
/// method (`__lt__`, `__le__`, `__gt__`, `__ge__`). Used by `@total_ordering` validation.
pub(crate) fn has_ordering_method_in_mro(
@@ -535,25 +551,23 @@ impl<'db> StaticClassLiteral<'db> {
.filter_map(|decorator| decorator.known(db))
}
/// Iterate through the decorators on this class, returning the position of the first one
/// that matches the given predicate.
pub(super) fn find_decorator_position(
self,
db: &'db dyn Db,
predicate: impl Fn(Type<'db>) -> bool,
) -> Option<usize> {
self.decorators(db)
.iter()
.position(|decorator| predicate(*decorator))
}
/// Iterate through the decorators on this class, returning the index of the first one
/// that is either `@dataclass` or `@dataclass(...)`.
pub(crate) fn find_dataclass_decorator_position(self, db: &'db dyn Db) -> Option<usize> {
self.find_decorator_position(db, |ty| match ty {
Type::FunctionLiteral(function) => function.is_known(db, KnownFunction::Dataclass),
Type::DataclassDecorator(_) => true,
_ => false,
let module = parsed_module(db, self.file(db)).load(db);
let class_stmt = self.node(db, &module);
let class_definition =
semantic_index(db, self.file(db)).expect_single_definition(class_stmt);
class_stmt.decorator_list.iter().position(|decorator| {
let decorator_callable = decorator
.expression
.as_call_expr()
.map_or(&decorator.expression, |call| &call.func);
definition_expression_type(db, class_definition, decorator_callable)
.as_function_literal()
.is_some_and(|function| function.is_known(db, KnownFunction::Dataclass))
})
}
@@ -744,7 +758,7 @@ impl<'db> StaticClassLiteral<'db> {
/// Checks if the given dataclass parameter flag is set for this class.
/// This checks both the `dataclass_params` and `transformer_params`.
fn has_dataclass_param(
pub(crate) fn has_dataclass_param(
self,
db: &'db dyn Db,
field_policy: CodeGeneratorKind<'db>,
crates/ty_python_semantic/src/types/diagnostic.rs
+41
View File
@@ -163,6 +163,7 @@ pub(crate) fn register_lints(registry: &mut LintRegistryBuilder) {
registry.register_lint(&INVALID_METHOD_OVERRIDE);
registry.register_lint(&INVALID_EXPLICIT_OVERRIDE);
registry.register_lint(&SUPER_CALL_IN_NAMED_TUPLE_METHOD);
registry.register_lint(&SUBCLASS_OF_DATACLASS_WITH_ORDER);
registry.register_lint(&INVALID_FROZEN_DATACLASS_SUBCLASS);
registry.register_lint(&INVALID_TOTAL_ORDERING);
registry.register_lint(&INVALID_LEGACY_POSITIONAL_PARAMETER);
@@ -2306,6 +2307,46 @@ declare_lint! {
}
}
declare_lint! {
/// ## What it does
/// Checks for classes that inherit from a dataclass with `order=True`.
///
/// ## Why is this bad?
/// When a dataclass has `order=True`, comparison methods (`__lt__`, `__le__`, `__gt__`, `__ge__`)
/// are generated that compare instances as tuples of their fields. These methods raise a
/// `TypeError` at runtime when comparing instances of different classes in the inheritance
/// hierarchy, even if one is a subclass of the other.
///
/// This violates the [Liskov Substitution Principle] because child class instances cannot be
/// used in all contexts where parent class instances are expected.
///
/// ## Example
///
/// ```python
/// from dataclasses import dataclass
///
/// @dataclass(order=True)
/// class Parent:
/// value: int
///
/// class Child(Parent): # Ty emits a warning here
/// pass
///
/// # At runtime, this raises TypeError:
/// # Child(1) < Parent(2)
/// ```
///
/// Consider using [`functools.total_ordering`][total_ordering] instead, which does not have this limitation.
///
/// [Liskov Substitution Principle]: https://en.wikipedia.org/wiki/Liskov_substitution_principle
/// [total_ordering]: https://docs.python.org/3/library/functools.html#functools.total_ordering
pub(crate) static SUBCLASS_OF_DATACLASS_WITH_ORDER = {
summary: "detects subclasses of dataclasses with `order=True`",
status: LintStatus::stable("0.0.39"),
default_level: Level::Warn,
}
}
declare_lint! {
/// ## What it does
/// Checks for methods on subclasses that override superclass methods decorated with `@final`.
crates/ty_python_semantic/src/types/infer/builder/post_inference/static_class.rs
+47 -6
View File
@@ -9,7 +9,7 @@ use ruff_text_size::{Ranged, TextRange, TextSize};
use rustc_hash::FxHashMap;
use crate::{
TypeQualifiers,
Db, TypeQualifiers,
diagnostic::format_enumeration,
place::{place_from_bindings, place_from_declarations},
types::{
@@ -29,11 +29,11 @@ use crate::{
INCONSISTENT_MRO, INVALID_ARGUMENT_TYPE, INVALID_BASE, INVALID_DATACLASS,
INVALID_GENERIC_CLASS, INVALID_GENERIC_ENUM, INVALID_METACLASS, INVALID_NAMED_TUPLE,
INVALID_PROTOCOL, INVALID_TYPED_DICT_HEADER, IncompatibleBases,
SUBCLASS_OF_FINAL_CLASS, UNKNOWN_ARGUMENT, report_bad_frozen_dataclass_inheritance,
report_conflicting_metaclass_from_bases, report_duplicate_bases,
report_instance_layout_conflict, report_invalid_or_unsupported_base,
report_invalid_total_ordering, report_invalid_type_param_order,
report_invalid_typevar_default_reference,
SUBCLASS_OF_DATACLASS_WITH_ORDER, SUBCLASS_OF_FINAL_CLASS, UNKNOWN_ARGUMENT,
report_bad_frozen_dataclass_inheritance, report_conflicting_metaclass_from_bases,
report_duplicate_bases, report_instance_layout_conflict,
report_invalid_or_unsupported_base, report_invalid_total_ordering,
report_invalid_type_param_order, report_invalid_typevar_default_reference,
report_named_tuple_field_with_leading_underscore,
report_namedtuple_field_without_default_after_field_with_default,
report_shadowed_type_variable,
@@ -382,6 +382,26 @@ pub(crate) fn check_static_class_definitions<'db>(
base_is_frozen,
);
}
if let Some(ordered_base_class) = ordered_dataclass_base_class(db, base_class)
&& let Some(node) = source_node
{
// Suppress the diagnostic if the child class manually overrides all comparison
// methods, since the user has explicitly fixed the LSP violation.
if !class.has_own_comparison_methods(db)
&& let Some(builder) = context.report_lint(&SUBCLASS_OF_DATACLASS_WITH_ORDER, node)
{
let mut diagnostic = builder.into_diagnostic(format_args!(
"Class `{}` inherits from dataclass `{}` which has `order=True`",
class.name(db),
ordered_base_class.name(db),
));
diagnostic.info(
"Comparison of instances of the child class with instances \
of the parent class will raise `TypeError` at runtime",
);
}
}
}
// Check for starred variable-length tuples that cannot be unpacked
@@ -1050,6 +1070,27 @@ pub(crate) fn check_static_class_definitions<'db>(
class.validate_members(context);
}
fn ordered_dataclass_base_class<'db>(
db: &'db dyn Db,
base_class: ClassType<'db>,
) -> Option<ClassType<'db>> {
for ancestor in base_class.iter_mro(db).filter_map(ClassBase::into_class) {
let Some((ancestor_literal, _)) = ancestor.static_class_literal(db) else {
continue;
};
if ancestor_literal.is_ordered_dataclass(db) {
return Some(ancestor);
}
if ancestor_literal.has_own_comparison_methods(db) {
return None;
}
}
None
}
/// Check that a `@final` class does not have unimplemented abstract methods.
///
/// A final class cannot be subclassed, so if it inherits abstract methods without
ty.schema.json
Generated
+10
View File
@@ -1300,6 +1300,16 @@
}
]
},
"subclass-of-dataclass-with-order": {
"title": "detects subclasses of dataclasses with `order=True`",
"description": "## What it does\nChecks for classes that inherit from a dataclass with `order=True`.\n\n## Why is this bad?\nWhen a dataclass has `order=True`, comparison methods (`__lt__`, `__le__`, `__gt__`, `__ge__`)\nare generated that compare instances as tuples of their fields. These methods raise a\n`TypeError` at runtime when comparing instances of different classes in the inheritance\nhierarchy, even if one is a subclass of the other.\n\nThis violates the [Liskov Substitution Principle] because child class instances cannot be\nused in all contexts where parent class instances are expected.\n\n## Example\n\n```python\nfrom dataclasses import dataclass\n\n@dataclass(order=True)\nclass Parent:\n value: int\n\nclass Child(Parent): # Ty emits a warning here\n pass\n\n# At runtime, this raises TypeError:\n# Child(1) < Parent(2)\n```\n\nConsider using [`functools.total_ordering`][total_ordering] instead, which does not have this limitation.\n\n[Liskov Substitution Principle]: https://en.wikipedia.org/wiki/Liskov_substitution_principle\n[total_ordering]: https://docs.python.org/3/library/functools.html#functools.total_ordering",
"default": "warn",
"oneOf": [
{
"$ref": "#/definitions/Level"
}
]
},
"subclass-of-final-class": {
"title": "detects subclasses of final classes",
"description": "## What it does\nChecks for classes that subclass final classes.\n\n## Why is this bad?\nDecorating a class with `@final` declares to the type checker that it should not be subclassed.\n\n## Example\n\n```python\nfrom typing import final\n\n@final\nclass A: ...\nclass B(A): ... # Error raised here\n```",