title: str.format() -> how to left-justify
body: <pre><code>&gt;&gt;&gt; print 'there are {0:10} students and {1:10} teachers'.format(scnt, tcnt)
  there are        100 students and         20 teachers
  </code></pre>
  
  <p>What would be the code so that the output became:</p>
  
  <pre><code>there are 100        students and 20         teachers
  </code></pre>
  
  <p>Thanks.</p>