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-rw-r--r--Lib/pathlib.py12
-rw-r--r--Misc/NEWS.d/next/Library/2023-10-28-22-11-11.gh-issue-111429.mJGxuQ.rst2
2 files changed, 10 insertions, 4 deletions
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index e3eecc3..47a043c 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -647,9 +647,11 @@ class PurePath:
"scheduled for removal in Python {remove}")
warnings._deprecated("pathlib.PurePath.relative_to(*args)", msg,
remove=(3, 14))
- other = self.with_segments(other, *_deprecated)
+ other = self.with_segments(other, *_deprecated)
+ elif not isinstance(other, PurePath):
+ other = self.with_segments(other)
for step, path in enumerate([other] + list(other.parents)):
- if self.is_relative_to(path):
+ if path == self or path in self.parents:
break
elif not walk_up:
raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}")
@@ -658,7 +660,7 @@ class PurePath:
else:
raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
parts = ['..'] * step + self._tail[len(path._tail):]
- return self.with_segments(*parts)
+ return self._from_parsed_parts('', '', parts)
def is_relative_to(self, other, /, *_deprecated):
"""Return True if the path is relative to another path or False.
@@ -669,7 +671,9 @@ class PurePath:
"scheduled for removal in Python {remove}")
warnings._deprecated("pathlib.PurePath.is_relative_to(*args)",
msg, remove=(3, 14))
- other = self.with_segments(other, *_deprecated)
+ other = self.with_segments(other, *_deprecated)
+ elif not isinstance(other, PurePath):
+ other = self.with_segments(other)
return other == self or other in self.parents
@property
diff --git a/Misc/NEWS.d/next/Library/2023-10-28-22-11-11.gh-issue-111429.mJGxuQ.rst b/Misc/NEWS.d/next/Library/2023-10-28-22-11-11.gh-issue-111429.mJGxuQ.rst
new file mode 100644
index 0000000..c8bc4c5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-10-28-22-11-11.gh-issue-111429.mJGxuQ.rst
@@ -0,0 +1,2 @@
+Speed up :meth:`pathlib.PurePath.relative_to` and
+:meth:`~pathlib.PurePath.is_relative_to`.