[Python] An iterative plot is not drawn in jupyter notebook while python works fine. Why?

I have written an iterative plot code for python using plt.draw(). While it works fine for python interpreter and ipython also, but it does not work in jupyter notebook. I am running python in virtualenv in Debian. The codes are

import matplotlib.pyplot as plt
import numpy as np

N=5
x = np.arange(-3, 3, 0.01)
fig = plt.figure()
ax = fig.add_subplot(111)
for n in range(N):
y = np.sin(np.pi*x*n)
line, = ax.plot(x, y)
plt.draw()
plt.pause(0.5)
line.remove()


This works fine in command line such as

$ python a.py
​

But, in jupyter notebook, it plots first figure and then, repeat <Figure size ... 0 Axes> for N-1 times, not drawing the new figure inside axis. It looks the problem of jupyter, because no problem in running python code. How can I fix this? Or plotly would work in jupyter? (N.B. I happen to find a jupyter community site and posted there also.)



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