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GH-113528: Deoptimise pathlib._abc.PurePathBase.relative_to() (#113529)

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Replace use of `_from_parsed_parts()` with `with_segments()` in
`PurePathBase.relative_to()`, and move the assignment of `_drv`, `_root`
and `_tail_cached` slots into `PurePath.relative_to()`.
This commit is contained in:
Barney Gale 2024-01-06 21:37:38 +00:00 committed by GitHub
parent 37bd893a22
commit a15a7735e6
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2 changed files with 5 additions and 2 deletions
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5
Lib/pathlib/__init__.py
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@ -245,7 +245,10 @@ class PurePath(_abc.PurePathBase):
"scheduled for removal in Python 3.14")
warnings.warn(msg, DeprecationWarning, stacklevel=2)
other = self.with_segments(other, *_deprecated)
return _abc.PurePathBase.relative_to(self, other, walk_up=walk_up)
path = _abc.PurePathBase.relative_to(self, other, walk_up=walk_up)
path._drv = path._root = ''
path._tail_cached = path._raw_paths.copy()
return path
def is_relative_to(self, other, /, *_deprecated):
"""Return True if the path is relative to another path or False.

2
Lib/pathlib/_abc.py
View File

@ -371,7 +371,7 @@ class PurePathBase:
else:
raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
parts = ['..'] * step + self._tail[len(path._tail):]
return self._from_parsed_parts('', '', parts)
return self.with_segments(*parts)
def is_relative_to(self, other):
"""Return True if the path is relative to another path or False.