10000 gh-89727: Fix os.walk RecursionError on deep trees by jonburdo · Pull Request #99803 · python/cpython · GitHub
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gh-89727: Fix os.walk RecursionError on deep trees #99803

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Merged
merged 16 commits into from
Dec 19, 2022
Merged

gh-89727: Fix os.walk RecursionError on deep trees #99803

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99f4691
gh-89727: Fix os.walk RecursionError on deep trees
jonburdo Nov 26, 2022
3552d49
add unit test to ensure os.walk is not affect by recursion limit
jonburdo Dec 16, 2022
3078ea6
move os._walk code to os.walk
jonburdo Dec 16, 2022
f37bbe8
fix blurb to mention os.walk
jonburdo Dec 16, 2022
f26a5b8
use deque in os.walk
jonburdo Dec 16, 2022
955d21b
Merge branch 'main' into iterative-os-walk
jonburdo Dec 16, 2022
8fbfb2e
Merge branch 'main' into iterative-os-walk
jonburdo Dec 16, 2022
ef46eda
move deque import inside os.walk
jonburdo Dec 16, 2022
e261b9f
rename temp_recursion_limit to set_recursion_limit
jonburdo Dec 16, 2022
5ec53f7
Merge branch 'main' into iterative-os-walk
jonburdo Dec 16, 2022
507b650
switch back to list instead of deque for os.walk stack
jonburdo Dec 16, 2022
1c35610
Apply suggestions from code review
jonburdo Dec 18, 2022
73138a6
clean up os.walk comments
jonburdo Dec 18, 2022
2814cc5
test correct value in test_walk_above_recursion_limit
jonburdo Dec 18, 2022
37f3cc7
set islink and join before loop in os.walk
jonburdo Dec 18, 2022
d9c766c
Merge branch 'main' into iterative-os-walk
jonburdo Dec 19, 2022
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set islink and join before loop in os.walk
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@jonburdo
jonburdo committed Dec 18, 2022
commit 37f3cc77d8cc9380561280bf49f4979c68437657
2 changes: 1 addition & 1 deletion Lib/os.py
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Original file line number Diff line number Diff line change
Expand Up @@ -342,6 +342,7 @@ def walk(top, topdown=True, onerror=None, followlinks=False):
sys.audit("os.walk", top, topdown, onerror, followlinks)

stack = [(False, fspath(top))]
islink, join = path.islink, path.join
while stack:
must_yield, top = stack.pop()
if must_yield:
Expand Down Expand Up @@ -414,7 +415,6 @@ def walk(top, topdown=True, onerror=None, followlinks=False):
# Yield before sub-directory traversal if going top down
yield top, dirs, nondirs
# Traverse into sub-directories
islink, join = path.islink, path.join
for dirname in reversed(dirs):
new_path = join(top, dirname)
# bpo-23605: os.path.islink() is used instead of caching
Expand Down
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