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gh-101196: Make isdir/isfile/exists faster on Windows (GH-101324)

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Co-authored-by: Eryk Sun <eryksun@gmail.com>
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Michael Droettboom 2023-02-08 09:34:24 -05:00 • committed by GitHub
parent 3a88de7a0a
commit 86ebd5c3fa
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9 changed files with 624 additions and 34 deletions
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14
Lib/genericpath.py
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@ -7,7 +7,7 @@ import os
import stat
__all__ = ['commonprefix', 'exists', 'getatime', 'getctime', 'getmtime',
'getsize', 'isdir', 'isfile', 'samefile', 'sameopenfile',
'getsize', 'isdir', 'isfile', 'islink', 'samefile', 'sameopenfile',
'samestat']
@ -45,6 +45,18 @@ def isdir(s):
return stat.S_ISDIR(st.st_mode)
# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.
def islink(path):
"""Test whether a path is a symbolic link"""
try:
st = os.lstat(path)
except (OSError, ValueError, AttributeError):
return False
return stat.S_ISLNK(st.st_mode)
def getsize(filename):
"""Return the size of a file, reported by os.stat()."""
return os.stat(filename).st_size