title: plot arrays by row with matplotlib
body: <p>I have two numpy arrays (a and b) with shape (16, 850) each. I'm displaying them row by row, e.g.</p>
  
  <pre><code>plt.figure()
  plt.plot(a[0], b[0])
  plt.plot(a[1], b[1]) 
  plt.plot(a[2], b[2])
  ...
  plt.show()
  </code></pre>
  
  <p>Should I have to use a for loop to do it in a more pythonic way?</p>