code: def show_grid(self, **kwargs):
          
          kwargs.setdefault('grid', 'back')
          kwargs.setdefault('location', 'outer')
          kwargs.setdefault('ticks', 'both')
          return self.show_bounds(**kwargs)
docs: A wrapped implementation of ``show_bounds`` to change default
          behaviour to use gridlines and showing the axes labels on the outer
          edges. This is intended to be silimar to ``matplotlib``'s ``grid``
          function.