Mutable Type Example : subclass « Class « Python Tutorial

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Python Tutorial » Class » subclass   11. 29. 7. Mutable Type Example class SortedKeyDict(dict):     def keys(self):         return sorted(super(             SortedKeyDict, self).keys()) d = SortedKeyDict((('A', 67), ('B', 68),('C', 2))) print 'By iterator:'.ljust(12), [key  for key  in d] print 'By keys():'.ljust(12), d.keys() 11. 29. subclass 11. 29. 1.  Creating Subclasses 11. 29. 2.  Class Inheritance 11. 29. 3.  __bases__ Class Attribute 11. 29. 4.  Overriding Methods through Inheritance 11. 29. 5.  __init__() is not invoked automatically when the subclass is instantiated. 11. 29. 6.  Deriving Standard Types 11. 29. 7.  Mutable Type Example 11. 29. 8.  Definition and test function for class Cylinder.

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