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CPython raises `OverflowError("cannot convert float infinity to integer")`
and `ValueError("cannot convert float NaN to integer")` from
`Objects/floatobject.c::float___trunc___impl` and friends. The exception
type name is added by Python's traceback display layer; the message
itself should not duplicate it.
`try_to_bigint` was producing
`OverflowError("OverflowError: cannot convert ...")` etc., which made
`repr(e)` and any code path that inspects `str(e)` diverge from CPython.
Affects all 5 callers of `try_to_bigint`: `__int__`, `__floor__`,
`__ceil__`, `__round__` (no-arg), `__trunc__` — i.e. `int(x)`,
`math.floor/ceil/trunc(x)`, `round(x)` for non-finite floats.
Verified byte-identical with CPython 3.14.4 across 14 affected sites.
Test snippets
This directory contains two sets of test snippets which can be run in Python.
The snippets/ directory contains functional tests, and the benchmarks/
directory contains snippets for use in benchmarking RustPython's performance.
Setup
Our testing depends on pytest, which you can install using pip.
Running
Simply run pytest -v in this directory, and the tests should run (and hopefully
pass). If it hangs for a long time, that's because it's building RustPython in
release mode, which should take less time than it would to run every test
snippet with RustPython compiled in debug mode.