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Improve various signatures that shouldn't be async def, but currently are (#7491)

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Co-authored-by: Thomas Grainger <tagrain@gmail.com>
This commit is contained in:
Alex Waygood
2022-03-19 03:54:39 +00:00
committed by GitHub
parent 37a981920f
commit 5c44ae4f8c
10 changed files with 44 additions and 17 deletions
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12
stdlib/builtins.pyi
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@@ -29,6 +29,7 @@ from typing import (
IO,
AbstractSet,
Any,
Awaitable,
BinaryIO,
ByteString,
Generic,
@@ -72,6 +73,8 @@ _T4 = TypeVar("_T4")
_T5 = TypeVar("_T5")
_SupportsNextT = TypeVar("_SupportsNextT", bound=SupportsNext[Any], covariant=True)
_SupportsAnextT = TypeVar("_SupportsAnextT", bound=SupportsAnext[Any], covariant=True)
_AwaitableT = TypeVar("_AwaitableT", bound=Awaitable[Any])
_AwaitableT_co = TypeVar("_AwaitableT_co", bound=Awaitable[Any], covariant=True)
class _SupportsIter(Protocol[_T_co]):
def __iter__(self) -> _T_co: ...
@@ -1068,8 +1071,15 @@ class _PathLike(Protocol[_AnyStr_co]):
if sys.version_info >= (3, 10):
def aiter(__async_iterable: _SupportsAiter[_SupportsAnextT]) -> _SupportsAnextT: ...
class _SupportsSynchronousAnext(Protocol[_AwaitableT_co]):
def __anext__(self) -> _AwaitableT_co: ...
@overload
async def anext(__i: SupportsAnext[_T]) -> _T: ...
# `anext` is not, in fact, an async function. When default is not provided
# `anext` is just a passthrough for `obj.__anext__`
# See discussion in #7491 and pure-Python implementation of `anext` at https://github.com/python/cpython/blob/ea786a882b9ed4261eafabad6011bc7ef3b5bf94/Lib/test/test_asyncgen.py#L52-L80
def anext(__i: _SupportsSynchronousAnext[_AwaitableT]) -> _AwaitableT: ...
@overload
async def anext(__i: SupportsAnext[_T], default: _VT) -> _T | _VT: ...