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gh-139482: Improve performance of os.environ.clear() #139549

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eendebakpt wants to merge 1 commit into from
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gh-139482: Improve performance of os.environ.clear() #139549

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8 changes: 8 additions & 0 deletions 8 Lib/os.py
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Original file line number Diff line number Diff line change
Expand Up @@ -732,6 +732,14 @@ def __iter__(self):
for key in keys:
yield self.decodekey(key)

def clear(self):
# linear complexity removal of keys, see gh-139482
for key in list(self):
try:
del self[key]
except KeyError:
pass

def __len__(self):
return len(self._data)

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