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Issue #13896: Make shelf instances work with 'with' as context managers.

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Original patch by Filip Gruszczyński.
This commit is contained in:
Andrew Svetlov 2012-10-06 13:52:19 +03:00
parent dc22587df2
commit ef08fb1f04
3 changed files with 23 additions and 0 deletions
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7
Lib/shelve.py
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@ -131,6 +131,12 @@ class Shelf(collections.MutableMapping):
except KeyError:
pass
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
def close(self):
self.sync()
try:
@ -147,6 +153,7 @@ class Shelf(collections.MutableMapping):
def __del__(self):
if not hasattr(self, 'writeback'):
# __init__ didn't succeed, so don't bother closing
# see http://bugs.python.org/issue1339007 for details
return
self.close()