title: print function not working python
body: <p>very new to programming not sure what is happening 
  I currently have</p>
  
  <pre><code>import os
  
  def rename_files():
      file_list = os.listdir (r"C:\Users\franc_000\Pictures\prank")
      print (file_list)
  </code></pre>
  
  <p>this returns nothing except for the >>> on two line in the module</p>