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youknowdot
8d27253fa2
Use the existing f-string body unparser for template interpolation format specs, while preserving the outer interpolation source text. Add compile-only Python annotation-constant coverage. Assisted-by: OpenAI Codex:model identifier unavailable
23 lines
688 B
Python
23 lines
688 B
Python
from typing import get_type_hints
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def func(s: str) -> int:
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return int(s)
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hints = get_type_hints(func)
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# The order of type hints matters for certain functions
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# e.g. functools.singledispatch
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assert list(hints.items()) == [('s', str), ('return', int)]
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# Template format specs use canonical expression text inside future annotations.
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for template, expected in (
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("t'{value:04}'", "t'{value:04}'"),
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("t'{value:{(width)}}'", "t'{value:{width}}'"),
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("t'{(value):{(width)!r}}'", "t'{(value):{width!r}}'"),
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):
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annotation_code = compile(
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"from __future__ import annotations\nx: " + template, "<test>", "exec"
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)
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assert expected in annotation_code.co_consts
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