title: Rounding float using f-string
body: <p>Using %-formatting, I can round the number of decimal cases in a string:</p>
  
  <pre><code>pi = 3.14159265
  print('pi = %0.2f' %pi)
  </code></pre>
  
  <p>And in output(in terminal) this would give me:</p>
  
  <pre><code>pi = 3.14
  </code></pre>
  
  <p>Can I use f-strings do this task? This feature has been added in Python 3.6</p>