title: How to get Year-Week format in ISO calendar format?
body: <p>I am trying to get the current date in ISO Calendar format as follows alongwith the zero padding on the week?</p>
  
  <pre><code>2019/W06
  </code></pre>
  
  <p>I tried the following, but prefer something using <code>strftime</code> as it is much easier to read.</p>
  
  <pre><code>print(str(datetime.datetime.today().isocalendar()[0]) + '/W' + str(datetime.datetime.today().isocalendar()[1]))
  2019/W6
  </code></pre>