title: How to print out matplotlib in VS Code
body: <p>Just a small question.  I have VS Code installed and trying it out with Python but no matter what I try I cannot get matplotlib plots to appear.</p>
  
  <p>Here is a simple code that does NOT work</p>
  
  <pre><code>import mglearn
  import matplotlib.pyplot as plt
  
  X, y = mglearn.datasets.make_wave(n_samples=40) 
  plt.plot(X, y, 'o') 
  plt.ylim(-3, 3) 
  plt.xlabel("Feature") 
  plt.ylabel("Target")
  </code></pre>
  
  <p>No error with the code appears but also no plot.  Thanks.</p>
  
  <p>Please note mglearn comes from the following Github
  <a href="https://github.com/amueller/mglearn" rel="nofollow noreferrer">https://github.com/amueller/mglearn</a></p>