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Issue #23700: NamedTemporaryFile iterator closed underlied file object in 

some circunstances while NamedTemporaryFile object was living.  This causes
failing test_csv.  Changed the implementation of NamedTemporaryFile.__iter__
to make tests passed.
This commit is contained in:
Serhiy Storchaka 2015-03-20 16:11:20 +02:00
parent f0c6cd3581
commit d83b7c2df4
1 changed files with 5 additions and 3 deletions
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8
Lib/tempfile.py
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@ -426,9 +426,11 @@ class _TemporaryFileWrapper:
# iter() doesn't use __getattr__ to find the __iter__ method
def __iter__(self):
# don't return iter(self.file), but yield from it to avoid closing
# file as long as it's being used as iterator, see issue #23000
yield from iter(self.file)
# Don't return iter(self.file), but yield from it to avoid closing
# file as long as it's being used as iterator, see issue #23000.
# XXX Also don't use "yield from"!
for line in self.file:
yield line
def NamedTemporaryFile(mode='w+b', buffering=-1, encoding=None,