Is there a clever way to pass the key to defaultdict's default_factory?
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by Paul Oyster
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Published on 2010-05-26T10:55:14Z
Indexed on
2010/05/26
11:31 UTC
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python
A class has a constructor which takes one parameter:
class C(object):
def __init__(self, v):
self.v = v
...
Somewhere in the code, it is useful for values in a dict to know their keys.
I want to use a defaultdict with the key passed to newborn default values:
d = defaultdict(lambda : C(here_i_wish_the_key_to_be))
Any suggestions?
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