title: Give 3 points and a plot circle
body: <p>I want to give the points [0,1],[1,0] and [0,-1] to python and plot the circle that passes over them. Does exists a python module that make this? I have tried using matplotlib:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  plt.plot([0,1,0],[1,0,-1])
  plt.show()
  </code></pre>
  
  <p>But only gave me two lines.</p>