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author | 2022-11-13 23:46:45 +0530 | |
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committer | 2022-11-13 23:46:45 +0530 | |
commit | 9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch) | |
tree | 0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/PIL/_deprecate.py | |
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Diffstat (limited to 'env/lib/python3.10/site-packages/PIL/_deprecate.py')
-rw-r--r-- | env/lib/python3.10/site-packages/PIL/_deprecate.py | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/env/lib/python3.10/site-packages/PIL/_deprecate.py b/env/lib/python3.10/site-packages/PIL/_deprecate.py new file mode 100644 index 0000000..30a8a89 --- /dev/null +++ b/env/lib/python3.10/site-packages/PIL/_deprecate.py @@ -0,0 +1,66 @@ +from __future__ import annotations + +import warnings + +from . import __version__ + + +def deprecate( + deprecated: str, + when: int | None, + replacement: str | None = None, + *, + action: str | None = None, + plural: bool = False, +) -> None: + """ + Deprecations helper. + + :param deprecated: Name of thing to be deprecated. + :param when: Pillow major version to be removed in. + :param replacement: Name of replacement. + :param action: Instead of "replacement", give a custom call to action + e.g. "Upgrade to new thing". + :param plural: if the deprecated thing is plural, needing "are" instead of "is". + + Usually of the form: + + "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd). + Use [replacement] instead." + + You can leave out the replacement sentence: + + "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd)" + + Or with another call to action: + + "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd). + [action]." + """ + + is_ = "are" if plural else "is" + + if when is None: + removed = "a future version" + elif when <= int(__version__.split(".")[0]): + raise RuntimeError(f"{deprecated} {is_} deprecated and should be removed.") + elif when == 10: + removed = "Pillow 10 (2023-07-01)" + else: + raise ValueError(f"Unknown removal version, update {__name__}?") + + if replacement and action: + raise ValueError("Use only one of 'replacement' and 'action'") + + if replacement: + action = f". Use {replacement} instead." + elif action: + action = f". {action.rstrip('.')}." + else: + action = "" + + warnings.warn( + f"{deprecated} {is_} deprecated and will be removed in {removed}{action}", + DeprecationWarning, + stacklevel=3, + ) |