title: matplotlib subplot in a 2 lines, 2 columns but only 3 graphs
body: <p>if I only have 2 plots, here is the code I use to plot subplots:</p>
  <pre><code>x = np.linspace(0,10,100)
  y1 = np.sin(x)
  y2 = np.cos(x)
  
  fig, (ax1,ax2) = plt.subplots(2,1)  # deux lignes une colonne
  
  ax1.plot(x,y1,color='C1')
  ax2.plot(x,y2,color='C0')
  
  fig.show()
  </code></pre>
  <p>now, I would like to plot the two same plots but in position 'A' and 'D' according to the organisation</p>
  <p>A   B</p>
  <p>C   D</p>
  <p>where B and C are empty.
  I tried this code, but it is not working:</p>
  <pre><code>fig, ((ax1,'empty'),('empty',ax2)) = plt.subplots(2,2) 
  
  ax1.plot(x,y1,color='C1')
  ax2.plot(x,y2,color='C0')
  
  fig.show()
  </code></pre>
  <p>The result I would like is this one, with the previous notation:</p>
  <pre><code>fig = plt.subplots()  
  ax1=plt.subplot(2,2,1)
  ax1.plot(x,y1,color='C1')
  
  ax2=plt.subplot(2,2,4)
  ax2.plot(x,y2,color='C0')
  </code></pre>
  <p>I finnaly found the solution, close to a suggested topic.</p>
  <pre><code>fig, axs = plt.subplots(2,2)
  
  axs[0,0].plot(x,y1)
  axs[1,1].plot(x,y2)
  
  axs[0,1].set_visible(False)
  axs[1,0].set_visible(False)
  
  fig.show()
  </code></pre>