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Refine the copy._SupportsReplace.__replace__ signature (#14786)

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This commit is contained in:
Joren Hammudoglu
2025-09-30 20:27:11 +02:00
committed by GitHub
parent 250bf77292
commit 91055c730f
2 changed files with 24 additions and 6 deletions
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stdlib/copy.pyi
+6 -6
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@@ -1,16 +1,15 @@
import sys
from typing import Any, Protocol, TypeVar, type_check_only
from typing_extensions import Self
__all__ = ["Error", "copy", "deepcopy"]
_T = TypeVar("_T")
_SR = TypeVar("_SR", bound=_SupportsReplace)
_RT_co = TypeVar("_RT_co", covariant=True)
@type_check_only
class _SupportsReplace(Protocol):
# In reality doesn't support args, but there's no other great way to express this.
def __replace__(self, *args: Any, **kwargs: Any) -> Self: ...
class _SupportsReplace(Protocol[_RT_co]):
# In reality doesn't support args, but there's no great way to express this.
def __replace__(self, /, *_: Any, **changes: Any) -> _RT_co: ...
# None in CPython but non-None in Jython
PyStringMap: Any
@@ -21,7 +20,8 @@ def copy(x: _T) -> _T: ...
if sys.version_info >= (3, 13):
__all__ += ["replace"]
def replace(obj: _SR, /, **changes: Any) -> _SR: ...
# The types accepted by `**changes` match those of `obj.__replace__`.
def replace(obj: _SupportsReplace[_RT_co], /, **changes: Any) -> _RT_co: ...
class Error(Exception): ...