title: running two process simultaneously
body: <p>I'm trying to run 2 processes simultaneously, but only the first one runs </p>
  
  <pre><code>def add():
      while True:
          print (1)
          time.sleep(3)
  
  def sud():
       while True:
          print(0)
          time.sleep(3)
  
  p1 = multiprocessing.Process(target=add) 
  p1.run()
  p = multiprocessing.Process(target=sud)
  p.run()
  </code></pre>