title: "None" appears before matrix
body: <p>I wrote a program that generates matrix 7x7 and then rotates it and transposing it. In output i see this &quot;None&quot;</p>
  <pre><code>import time
  import numpy as np
  matsize = np.array([7,7])
  matrix = np.random.randint(1000,size=(matsize))
  print('\nSwource matrix:\n', matrix, '\n')
  
  rotmatr = np.rot90(matrix, k=-1)
  print('Rotation to 90 degrees...\n')
  print(time.sleep(2), rotmatr, '\n')
  
  transpos = np.transpose(rotmatr)
  print('Transposing...\n')
  print(time.sleep(2), transpos)
  </code></pre>
  <p>example of how the code works</p>
  <pre><code>Swource matrix:
   [[909 859 984 490 773 696 576]
   [780 645 632 233 109 181  18]
   [ 81 890 328 746 930  45 999]
   [944 992 556 436 545 210 814]
   [192 827 820 321  45 959 940]
   [921 529 276 996 141 132 183]
   [235 842 287 169  71 857  70]] 
  
  Rotation to 90 degrees...
  
  None [[235 921 192 944  81 780 909]
   [842 529 827 992 890 645 859]
   [287 276 820 556 328 632 984]
   [169 996 321 436 746 233 490]
   [ 71 141  45 545 930 109 773]
   [857 132 959 210  45 181 696]
   [ 70 183 940 814 999  18 576]] 
  
  Transposing...
  
  None [[235 842 287 169  71 857  70]
   [921 529 276 996 141 132 183]
   [192 827 820 321  45 959 940]
   [944 992 556 436 545 210 814]
   [ 81 890 328 746 930  45 999]
   [780 645 632 233 109 181  18]
   [909 859 984 490 773 696 576]]
  
  Process finished with exit code 0
  </code></pre>
  <p>What this NONE is and how to delete it???</p>