title: Python sys.stdout.flush() doesn't seem to work
body: <p>I want to see the progress of my for loop by repeatedly overwriting the print function.  I expected the printed line to be overwritten every time the loop progresses. What happened was that after every loop a new line was printed right under the previous printed line. This was solved by removing the \n from the print line, because the \n caused a new empty line to be overwritten each time, instead of overwriting the first printed line.</p>
  
  <pre><code>import sys
  import time
  
  count1=0
  x=10
  for i in range(x):
      count1+=1
      sys.stdout.write("\r{} out of {}...\n".format(count1, x))
      sys.stdout.flush()
      time.sleep(.1)
  </code></pre>
  
  <p>I am using Python 3.6 (64-bit) in Jupter Notebook 4.3.1. on Windows 10.</p>
  
  <p>I have looked over several issues posted on Stack Overflow, but I haven't been able to solve it yet.</p>
  
  <p>Thanks!</p>