title: save output values in txt file in columns python
body: <p>My input value gives corresponding output values as;</p>
  
  <pre><code>my_list = []
  for i in range(1,10):
       system = i,i+2*i
       my_list.append(system)
       print(my_list)
  
  [(1, 3)]
  
  [(1, 3), (2, 6)]
  
  [(1, 3), (2, 6), (3, 9)]
  
  [(1, 3), (2, 6), (3, 9), (4, 12)]
  </code></pre>
  
  <p>I want output stored in 2 columns; where <code>1,2,3</code>is first column elements and <code>3,6,9</code> for 2nd column. </p>
  
  <pre><code>(1 3)
  (2 6)
  (3 9)
  </code></pre>
  
  <p>so on... and then write store these values in text file. For text file, is it possible to generate text file as a part of script? Thanks</p>