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gh-137855: Improve import time of `pathlib` by hugovk · Pull Request #146327 · python/cpython · GitHub

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gh-137855: Improve import time of pathlib #146327

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Merged
encukou merged 2 commits into from
May 5, 2026
Conversation 2 Commits 2 Checks 51 Files changed
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gh-137855: Improve import time of pathlib #146327

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f0d631f
Improve import time of pathlib
hugovk Mar 23, 2026
4fa8e23
Merge branch 'main' into 3.15-lazy-pathlib
hugovk May 4, 2026
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5 changes: 2 additions & 3 deletions Lib/pathlib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,12 +12,13 @@
import posixpath
import sys
from errno import *
from glob import _StringGlobber, _no_recurse_symlinks
from itertools import chain
from stat import (
S_IMODE, S_ISDIR, S_ISREG, S_ISLNK, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO,
)
from _collections_abc import Sequence
lazy import shutil
lazy from glob import _StringGlobber, _no_recurse_symlinks

try:
import pwd
Expand Down Expand Up @@ -1255,8 +1256,6 @@ def _delete(self):
if self.is_symlink() or self.is_junction():
self.unlink()
elif self.is_dir():
# Lazy import to improve module import time
import shutil
shutil.rmtree(self)
else:
self.unlink()
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2 changes: 1 addition & 1 deletion Lib/test/test_pathlib/test_pathlib.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ def test_is_notimplemented(self):
class LazyImportTest(unittest.TestCase):
@cpython_only
def test_lazy_import(self):
import_helper.ensure_lazy_imports("pathlib", {"shutil"})
import_helper.ensure_lazy_imports("pathlib", {"glob", "shutil"})


#
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