`types._GeneratorWrapper` is no longer consistent with `types.GeneratorType`/`types.CoroutineType`
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描述
Bug report
Bug description:
types.coroutine() uses _GeneratorWrapper as a wrapper for generator iterators in cases where the callable object is not a user-defined function (but is, for example, a generator function compiled via Cython/Nuitka). However, the implementation has not been updated for 11 years and therefore does not provide certain properties, such as:
GeneratorType.gi_suspended(Python ≥3.11, python/cpython#30633)CoroutineType.cr_suspended(Python ≥3.11, python/cpython#30633)CoroutineType.cr_origin(Python ≥3.7, python/cpython#5250)
As a result, the objects returned by the new function do not look exactly like types.GeneratorType/types.CoroutineType, which in particular makes them incompatible with the inspect.getgeneratorstate() and inspect.getcoroutinestate() functions:
>>> from inspect import getcoroutinestate, getgeneratorstate
>>> from types import coroutine
>>> def generator_function():
... return
... yield # generator definition
>>> @coroutine
... def coroutine_function():
... return generator_function()
>>> gencoro = coroutine_function()
>>> getgeneratorstate(gencoro)
Traceback (most recent call last):
AttributeError: '_GeneratorWrapper' object has no attribute 'gi_suspended'
>>> getcoroutinestate(gencoro)
Traceback (most recent call last):
AttributeError: '_GeneratorWrapper' object has no attribute 'cr_suspended'
Interestingly, there was already an attempt to add *_suspended in #133373 (see https://github.com/python/cpython/issues/133372#issuecomment-2849166854), but the PR was closed in favor of removing the TODO comment, and this side issue was apparently overlooked.
Related: cython/cython#7448.
CPython versions tested on:
3.11, 3.12, 3.13, 3.14
Operating systems tested on:
Linux
Linked PRs
- gh-143609
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调研方向
从 Lib/types.py 第255-289行开始,然后检查 inspect.getgeneratorstate() 和 inspect.getcoroutinestate(),报告将它们标识为受影响的入口点。将 wrapper 暴露的属性与 GeneratorType 和 CoroutineType 进行比较;完成的标准是两个 inspect 函数都能用于被包装的对象,并且列出的挂起和来源属性保持一致。
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