title: Normalize Mobile Numbers using Python
body: <p>I have a string of digits, how can I format this as a mobile number?
  I am trying to create a python def that takes a string and normalizes them into a format I can use.</p>
  
  <p>I am trying to remove all symbols, spaces and if input digit start with 0 and just leave the numbers. As well as add +98 to the beginning</p>
  
  <pre><code>Some trivial examples:
  
  916 222 3344       &gt; +989162223344
  09375554433        &gt; +989375554433
  +98 912 999 88 77  &gt; +989129998877
  </code></pre>