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GH-114847: Speed up posixpath.realpath() #114848

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Merged
barneygale merged 23 commits into from
Apr 5, 2024
Merged

GH-114847: Speed up posixpath.realpath() #114848

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0a4f60a
GH-114847: Speed up `posixpath.realpath()`
barneygale Feb 1, 2024
5aa9c51
Tiny tweak
barneygale Feb 1, 2024
b758710
Slightly speed up handling of empty/dot parts
barneygale Feb 1, 2024
eb079b4
Merge branch 'main' into gh-114847
barneygale Mar 31, 2024
60d3bcb
Simplify '..' handling.
barneygale Mar 31, 2024
b849308
A few more perf improvements and simplifications.
barneygale Mar 31, 2024
085e105
Simplify symlink resolution signalling
barneygale Mar 31, 2024
69dabd2
Tiny tweaks
barneygale Mar 31, 2024
197c871
Spacing
barneygale Mar 31, 2024
b03e474
Merge branch 'main' into gh-114847
barneygale Apr 1, 2024
ecd1fe7
Comments
barneygale Apr 1, 2024
4b83c97
Final tweaks
barneygale Apr 1, 2024
77712d2
Further explain 'rest'.
barneygale Apr 1, 2024
15199a8
Update Lib/posixpath.py
barneygale Apr 2, 2024
8b3b808
Merge branch 'main' into gh-114847
barneygale Apr 2, 2024
01127e3
Merge branch 'main' into gh-114847
barneygale Apr 3, 2024
31955ee
Undo re-ordering of lstat() and seen lookup
barneygale Apr 3, 2024
211167e
Merge branch 'main' into gh-114847
barneygale Apr 3, 2024
fe62fef
Re-optimise link check
barneygale Apr 4, 2024
ebccd2b
Stop querying when `lstat()` fails.
barneygale Apr 4, 2024
d2a0248
Keep querying if we hit an OSError from lstat()
barneygale Apr 4, 2024
ecbb27c
Merge branch 'main' into gh-114847
barneygale Apr 4, 2024
eed739a
Update Lib/posixpath.py
barneygale Apr 5, 2024
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Re-optimise link check
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@barneygale
barneygale committed Apr 4, 2024
commit fe62fef0050638c6de40475fd0d353f10bd981e6
7 changes: 3 additions & 4 deletions Lib/posixpath.py
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Original file line number Diff line number Diff line change
Expand Up @@ -456,13 +456,12 @@ def realpath(filename, *, strict=False):
continue
try:
st = os.lstat(newpath)
if not stat.S_ISLNK(st.st_mode):
path = newpath
continue
except OSError:
if strict:
raise
is_link = False
else:
is_link = stat.S_ISLNK(st.st_mode)
if not is_link:
path = newpath
continue
# Resolve the symbolic link
Expand Down