def map_function(self, func, *arg_lists):
        """Map a function to all grid_stack in a grid-stack"""
        return GridStack(*[func(*args) for args in zip(self, *arg_lists)])
def map_function(self, func, *arg_lists):
        """Map a function to all grid_stack in a grid-stack"""
        return GridStack(*[func(*args) for args in zip(self, *arg_lists)])
def map_function ( self , func , * arg_lists ) : return GridStack ( * [ func ( * args ) for args in zip ( self , * arg_lists ) ] )
Map a function to all grid_stack in a grid-stack
Map a function to all grid_stack in a grid - stack