Usage Example

>>> from interfaces import *
>>> class IFoo(interface):
...    def foo( self, a, b, c ):
...       """Does a foo"""
... 
>>> @implements(IFoo)
... class Foo(object):
...    pass
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "interfaces/__init__.py", line 46, in implementsDecorator
    raise MissingInterfaceMethodException( newClass, functionName, interfaceClass )
interfaces.MissingInterfaceMethodException: Foo does not implement 'foo' from IFoo
>>> @implements(IFoo)
... class Foo(object):
...    def foo( self ):
...       pass
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "interfaces/__init__.py", line 58, in implementsDecorator
    newClass, implementSig )
interfaces.IncompatibleMethodException: Foo implements foo( self ) but IFoo expects foo( self, a, b, c )
>>> @implements(IFoo)
... class Foo(object):
...    def foo( self, a, b, c ):
...       pass
... 
>>> f = Foo( )
>>> help(f.foo)
Help on method foo in module __main__:

foo(self, a, b, c) method of __main__.Foo instance
    Does a foo