title: How to convert python list to Pandas series
body: <p>I have a python list l.The first few elements of the list looks like below</p>
  
  <pre><code>[751883787]
  [751026090]
  [752575831]
  [751031278]
  [751032392]
  [751027358]
  [751052118]
  </code></pre>
  
  <p>I want to convert this list to pandas.core.series.Series with 2 leading 0.My final outcome will look like</p>
  
  <pre><code>00751883787
  00751026090
  00752575831
  00751031278
  00751032392
  00751027358
  00751052118
  </code></pre>
  
  <p>I'm working in Python 3.x in windows environment.Can you suggest me how to do this?
  Also my list contains around 2000000 elements</p>