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bpo-30441: Fix bug when modifying os.environ while iterating over it (#2409)

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Osvaldo Santana Neto 2017-07-01 14:34:45 -03:00 • committed by Serhiy Storchaka
parent 85f643023f
commit 8a8d28501f
4 changed files with 29 additions and 1 deletions
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4
Lib/os.py
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@ -697,7 +697,9 @@ class _Environ(MutableMapping):
raise KeyError(key) from None
def __iter__(self):
for key in self._data:
# list() from dict object is an atomic operation
keys = list(self._data)
for key in keys:
yield self.decodekey(key)
def __len__(self):