title: Want to create a tab delimited file with autonumbers
body: <p>I would like to create a tab delimited file with Python and add autonumbering 001 - 002 - 003 - ... to 10 in first column and 011 - 012 - 013 in second &quot;column&quot;
  I try to create 2 variables and don't know how to add the leading zero's part. Also writing the variables gives a error message.</p>
  <pre><code>lst1 = list(range(1,10+1))
  lst2 = list(range(11,20+1))
  
  #zero_filled_number = number_str.zfill(3)
  
  with open('numbers2.txt', 'w') as f:
     # f.write('Start')
     f.write((lst1) + &quot;\t&quot; + (lst2))
  </code></pre>