title: How to specify large integer literals in a readable way?
body: <p>I want to specify a sequence of large integers (with many zeros) like:</p>
  
  <pre><code>a = [1e13, 1e14, 1e19, ...]
  </code></pre>
  
  <p>My intuition is to use scientific notation. But in python, it's a float instead of integer. Is there a easy way in python to write these integer literals without writing all the zeros, because making sure the number of zeros correct is a nightmare.</p>
  
  <p>I believe I can cast the floats back to integer using <code>int</code>, but just wonder if there is a better way?</p>