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Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled

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size and pickling time.
This commit is contained in:
Serhiy Storchaka 2013-05-21 12:47:57 +03:00
parent b10c71daa2
commit 3ee6dabf5b
3 changed files with 15 additions and 6 deletions
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5
Lib/collections/__init__.py
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@ -199,13 +199,10 @@ class OrderedDict(dict):
def __reduce__(self):
'Return state information for pickling'
items = [[k, self[k]] for k in self]
inst_dict = vars(self).copy()
for k in vars(OrderedDict()):
inst_dict.pop(k, None)
if inst_dict:
return (self.__class__, (items,), inst_dict)
return self.__class__, (items,)
return self.__class__, (), inst_dict or None, None, iter(self.items())
def copy(self):
'od.copy() -> a shallow copy of od'