title: How to concatenate element-wise two lists in Python
body: <p>I have two lists and I want to concatenate them element-wise. One of the list is subjected to string-formatting before concatenation. </p>
  
  <p>For example :</p>
  
  <pre><code>a = [0, 1, 5, 6, 10, 11] 
  b = ['asp1', 'asp1', 'asp1', 'asp1', 'asp2', 'asp2']
  </code></pre>
  
  <p>In this case, <code>a</code> is subjected to string-formatting. That is, new <code>a</code> or <code>aa</code> should be :</p>
  
  <pre><code>aa = [00, 01, 05, 06, 10, 11]
  </code></pre>
  
  <p>Final output should be :</p>
  
  <pre><code>c = ['asp100', 'asp101', 'asp105', 'asp106', 'asp210', 'asp211']
  </code></pre>
  
  <p>Can somebody please tell me how to do that?  </p>