def plot(
        self,
        show_this=True,
        show_that=True,
        color='k',
        boundary_color=None,
        other_color=[0.8, 0.8, 0.8],
        show_axes=True
        ):
    # lots of code
    return

def show(
        self,
        show_this=True,
        show_that=True,
        color='k',
        boundary_color=None,
        other_color=[0.8, 0.8, 0.8],
        show_axes=True
        ):
    from matplotlib import pyplot as plt
    self.plot(
        show_this=show_this,
        show_that=show_that,
        color=color,
        boundary_color=boundary_color,
        other_color=other_color,
        show_axes=show_axes
        )
    plt.show()
    return

def show(self, *args, **kwargs):
    from matplotlib import pyplot as plt
    self.plot(*args, **kwargs)
    plt.show()