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Add 3.14 codecs.open deprecation #15174

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Add 3.14 codecs.open deprecation #15174

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3c76d8f
Add codecs.open deprecation
max-muoto Dec 25, 2025
e683b03
Deprecate always
max-muoto Dec 25, 2025
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3 changes: 2 additions & 1 deletion stdlib/codecs.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ from _typeshed import ReadableBuffer
from abc import abstractmethod
from collections.abc import Callable, Generator, Iterable
from typing import Any, BinaryIO, ClassVar, Final, Literal, Protocol, TextIO, overload, type_check_only
from typing_extensions import Self, TypeAlias, disjoint_base
from typing_extensions import Self, TypeAlias, deprecated, disjoint_base

__all__ = [
"register",
Expand Down Expand Up @@ -191,6 +191,7 @@ def getincrementaldecoder(encoding: _BufferedEncoding) -> _BufferedIncrementalDe
def getincrementaldecoder(encoding: str) -> _IncrementalDecoder: ...
def getreader(encoding: str) -> _StreamReader: ...
def getwriter(encoding: str) -> _StreamWriter: ...
@deprecated("codecs.open() is deprecated. Use open() instead.")
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@donbarbos donbarbos Dec 26, 2025

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Thank you, but let's use more unify message, like this:

Suggested change
@deprecated("codecs.open() is deprecated. Use open() instead.")
@deprecated("Deprecated since Python 3.14. Use `open()` instead.")

def open(
filename: str, mode: str = "r", encoding: str | None = None, errors: str = "strict", buffering: int = -1
) -> StreamReaderWriter: ...
Expand Down