Inheriting (subclass) of dict data attribute (copying)

[Aaron S. Hawley]

Would be the most obvious (best in idiom) to overwrite the dictionary of
my derived dict class?  The old school way is obvious to me.

TIA, /a

#!/usr/bin/env python

from UserDict import UserDict

class Old_Chickens(UserDict): ## old school
    def __init__(self, chickens):
        self.set_chickens(chickens)
    def set_chickens(self, chickens):
        self.data = chickens

class New_Chickens(dict): ## new school
    def __init__(self, chickens):
        self.set_chickens(chickens)
    def set_chickens(self, chickens):
        self = dict.__init__(self, chickens)


new_chickens = New_Chickens({'white': 12, 'brown': 8})
print new_chickens['white']

old_chickens = Old_Chickens({'white': 12, 'brown': 8})
print old_chickens['white']

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