>>> """
=================================
Pausing and Resuming an Animation
=================================

This example showcases:

- using the Animation.pause() method to pause an animation.
- using the Animation.resume() method to resume an animation.
"""
... 
... import matplotlib.pyplot as plt
... import matplotlib.animation as animation
... import numpy as np
... 
... 
... class PauseAnimation:
...     def __init__(self):
...         fig, ax = plt.subplots()
...         ax.set_title('Click to pause/resume the animation')
...         x = np.linspace(-0.1, 0.1, 1000)
... 
...         # Start with a normal distribution
...         self.n0 = (1.0 / ((4 * np.pi * 2e-4 * 0.1) ** 0.5)
...                    * np.exp(-x ** 2 / (4 * 2e-4 * 0.1)))
...         self.p, = ax.plot(x, self.n0)
... 
...         self.animation = animation.FuncAnimation(
...             fig, self.update, frames=200, interval=50, blit=True)
...         self.paused = False
... 
...         fig.canvas.mpl_connect('button_press_event', self.toggle_pause)
... 
...     def toggle_pause(self, *args, **kwargs):
...         if self.paused:
...             self.animation.resume()
...         else:
...             self.animation.pause()
...         self.paused = not self.paused
... 
...     def update(self, i):
...         self.n0 += i / 100 % 5
...         self.p.set_ydata(self.n0 % 20)
...         return (self.p,)
... 
... 
... pa = PauseAnimation()
... plt.show()
...