title: Is it good practice to change the type of a variable in python?
body: <p>I just realized that Python lets you do this:</p>
  
  <pre><code>n = '34'
  n = int(n)
  </code></pre>
  
  <p>Is this a bad idea? The alternative, of course, is this:</p>
  
  <pre><code>nStr = '34'
  n = int(nStr)
  </code></pre>