lenses/optics/base.py
def func(self, f, state):
        '''Intended to be overridden by subclasses. Raises
        NotImplementedError.'''
        message = 'Tried to use unimplemented lens {}.'
        raise NotImplementedError(message.format(type(self)))
def func(self, f, state):
        '''Intended to be overridden by subclasses. Raises
        NotImplementedError.'''
        message = 'Tried to use unimplemented lens {}.'
        raise NotImplementedError(message.format(type(self)))
Intended to be overridden by subclasses. Raises
        NotImplementedError.