def add_callback(self, callback, *callback_args, **callback_kwargs):
        """Add a callback without an associated errback."""
        return self.add_callbacks(callback, callback_args=callback_args,
                           callback_kwargs=callback_kwargs)
def add_callback ( self , callback , * callback_args , ** callback_kwargs ) : return self . add_callbacks ( callback , callback_args = callback_args , callback_kwargs = callback_kwargs )
Add a callback without an associated errback.