title: Python: How to plot circles around given coordinates
body: <p>I'm currently trying to plot circles of a given radius around coordinates, in order to see if the plotted circles overlap. I currently have:</p>
  
  <pre><code>import matplotlib.pyplot as plt
  
  for i in range(len(b)):
      for j in range(len(d)):
  
          circle1=plt.Circle((b[i,0], b[i,1]), 0.5, color='r', fill=False)
          circle1=plt.Circle((d[j,0], d[j,1]), 0.5, color='g', fill=False)
          fig = plt.gcf()
          fig.gca().add_artist(circle1)
          fig.gca().add_artist(circle2)
          fig.savefig('plotcircles.png')
  </code></pre>
  
  <p>b and d are lists with two elements per row.</p>
  
  <p>Thank you!</p>