> > I would like to know the interface concept in Python.How the
> > Interface is defined and implemented in Python?.
One way I have implemented interfaces, is as follows:
class MyInterface(object):
def someMethod(self, argument):
raise NotImplementedError()
If anybody ever uses that class directly, or subclasses it without
implementing a real version of that method, a runtime error can be
expected. This bridges both interfaces and abstract classes.
As others have pointed out, this isn't quite like a Java interface,
but I have found it useful to state my intentions up front, and that
is how I do it. The only way to truly enforce this is by following up
with lots of good test cases, run often.
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