Python 3.14: PEP-784 zstd in other modules

[Rogdham]

Third PR about PEP-784 in sdlib (first PR second PR):

• Moved files around in compression module, this was done between CPython 3.14.0b1 and 3.14.0b2
• Add PEP-784 related changes where needed outside of compression module:
  • tarfile: this PR
  • shutil: no changes needed in type hints
  • zipfile: was done in Update to Python 3.14.0b2 #14182 already

I did not put sys.version_info >= (3, 14) guards around the Literal values for parameter mode as this would be a lot for nothing I believe, but feel to tell otherwise.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

pandas (https://github.com/pandas-dev/pandas)
- pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None, mode: Literal['r|*', 'r|', 'r|gz', 'r|bz2', 'r|xz'], fileobj: _Fileobj | None = ..., bufsize: int = ..., *, format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
+ pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None, mode: Literal['r|*', 'r|', 'r|gz', 'r|bz2', 'r|xz', 'r|zst'], fileobj: _Fileobj | None = ..., bufsize: int = ..., *, format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
- pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None = ..., *, mode: Literal['r|*', 'r|', 'r|gz', 'r|bz2', 'r|xz'], fileobj: _Fileobj | None = ..., bufsize: int = ..., format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
+ pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None = ..., *, mode: Literal['r|*', 'r|', 'r|gz', 'r|bz2', 'r|xz', 'r|zst'], fileobj: _Fileobj | None = ..., bufsize: int = ..., format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
- pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None, mode: Literal['w|', 'w|xz'], fileobj: _Fileobj | None = ..., bufsize: int = ..., *, format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
+ pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None, mode: Literal['w|', 'w|xz', 'w|zst'], fileobj: _Fileobj | None = ..., bufsize: int = ..., *, format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
- pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None = ..., *, mode: Literal['w|', 'w|xz'], fileobj: _Fileobj | None = ..., bufsize: int = ..., format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile
+ pandas/io/common.py:995: note:     def open(cls, name: str | bytes | PathLike[str] | PathLike[bytes] | Buffer | None = ..., *, mode: Literal['w|', 'w|xz', 'w|zst'], fileobj: _Fileobj | None = ..., bufsize: int = ..., format: int | None = ..., tarinfo: type[TarInfo] | None = ..., dereference: bool | None = ..., ignore_zeros: bool | None = ..., encoding: str | None = ..., errors: str = ..., pax_headers: Mapping[str, str] | None = ..., debug: int | None = ..., errorlevel: int | None = ...) -> TarFile

[srittau]

Thanks!