What is proper way to require a method to be overridden?
Thomas Ploch
Thomas.Ploch at gmx.net
Thu Jan 4 22:40:34 EST 2007
jeremito schrieb:
> I am writing a class that is intended to be subclassed. What is the
> proper way to indicate that a sub class must override a method?
>
> Thanks,
> Jeremy
>
What do you mean by 'indicate'? Writing it to the docstring of the
class/method? Writing a comment?
class Foo:
"""
When inheriting from Foo, method foo must be
overridden. Otherwise SPAM.
"""
def foo(self):
print 'bar'
class Bar(Foo):
def __init__(self):
Foo.__init__(self)
# Has to be defined to override the base class's method
# when inheriting from class Foo. Otherwise: SPAM
def foo(self):
print 'foo'
I don't know any other way.
Thomas
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