https://github.com/python/cpython/commit/5c7bd0e39839b27bc524e1790fe4936d987f384a
commit: 5c7bd0e39839b27bc524e1790fe4936d987f384a
branch: main
author: Barney Gale <[email protected]>
committer: barneygale <[email protected]>
date: 2024-01-09T22:46:50Z
summary:
GH-113528: Deoptimise `pathlib._abc.PurePathBase.parts` (#113883)
Implement `parts` using `_stack`, which itself calls `pathmod.split()`
repeatedly. This avoids use of `_tail`, which will be moved to `PurePath`
shortly.
files:
M Lib/pathlib/__init__.py
M Lib/pathlib/_abc.py
diff --git a/Lib/pathlib/__init__.py b/Lib/pathlib/__init__.py
index 749c68d2999bdc..26e14b3f7b2005 100644
--- a/Lib/pathlib/__init__.py
+++ b/Lib/pathlib/__init__.py
@@ -195,6 +195,15 @@ def __ge__(self, other):
return NotImplemented
return self._parts_normcase >= other._parts_normcase
+ @property
+ def parts(self):
+ """An object providing sequence-like access to the
+ components in the filesystem path."""
+ if self.drive or self.root:
+ return (self.drive + self.root,) + tuple(self._tail)
+ else:
+ return tuple(self._tail)
+
@property
def parent(self):
"""The logical parent of the path."""
diff --git a/Lib/pathlib/_abc.py b/Lib/pathlib/_abc.py
index caa84fc40559f7..c16beca71aa7c7 100644
--- a/Lib/pathlib/_abc.py
+++ b/Lib/pathlib/_abc.py
@@ -381,10 +381,10 @@ def is_relative_to(self, other):
def parts(self):
"""An object providing sequence-like access to the
components in the filesystem path."""
- if self.drive or self.root:
- return (self.drive + self.root,) + tuple(self._tail)
- else:
- return tuple(self._tail)
+ anchor, parts = self._stack
+ if anchor:
+ parts.append(anchor)
+ return tuple(reversed(parts))
def joinpath(self, *pathsegments):
"""Combine this path with one or several arguments, and return a
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