title: What is the function of {:-9} in python?
body: <p>In the Python tutorial (<a href="https://docs.python.org/3.8/tutorial/inputoutput.html" rel="nofollow noreferrer">https://docs.python.org/3.8/tutorial/inputoutput.html</a>) they used {:-9}, and i cant figure out for the life of me what the -9 does?:</p>
  <pre><code>yes_votes = 42_572_654
  no_votes = 43_132_495
  percentage = yes_votes / (yes_votes + no_votes)
  '{:-9} YES votes  {:2.2%}'.format(yes_votes, percentage)
  </code></pre>
  <p>Output:
  42572654 YES votes  49.67%</p>