Mandatory overriding of fields/methods?

Question

How do you specify in a Python parent class that certain fields/methods need to be overridden in the child classes?

Answer 1

You could raise a NotImplementedError:

def my_method(self, arg):
    raise NotImplementedError('Implement me')

For properties, you can use the @property decorator:

@property
def my_property(self):
    raise NotImplementedError('Implement me as well')