pythonGH-119518: Stop interning strings in pathlib

Remove `sys.intern(str(x))` calls when normalizing a path in pathlib. This speeds up `str(Path('foo/bar'))` by about 10%.
barneygale · Aug 26, 2024 · d7e019b · d7e019b
1 parent 7bd6ebf
commit d7e019b
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diff --git a/Lib/pathlib/_local.py b/Lib/pathlib/_local.py
@@ -273,7 +273,7 @@ def _parse_path(cls, path):
             elif len(drv_parts) == 6:
                 # e.g. //?/unc/server/share
                 root = sep
-        parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.']
+        parsed = [x for x in rel.split(sep) if x and x != '.']
         return drv, root, parsed
 
     @property

diff --git a/Misc/NEWS.d/next/Library/2024-08-26-18-48-13.gh-issue-119518.QFYH9q.rst b/Misc/NEWS.d/next/Library/2024-08-26-18-48-13.gh-issue-119518.QFYH9q.rst
@@ -0,0 +1,2 @@
+Speed up normalization of :class:`pathlib.PurePath` and
+:class:`~pathlib.Path` objects by not interning string parts.