title: Reading file from a file converting int to str
body: <p>I have a file with data given below , it includes <strong>alph , int , real no , alphanumeric</strong> : </p>
  
  <pre><code>    AAKzAlazNghRnKk,  gD6mLtXhOgIOqwb         ,-7,123456789,
  irLpFWqlPcTSoyz, 94QdguKLborVKE7       ,1,123456789,
  vtUQrAKPsWsNDQj,        a1h5UDsN1ATlKde      ,0,123456789,
  wIaWGDDykPvdYjm,19K1qSJUPP0wzIO    ,7,123456789,
  zcWsfLYFJlOmISg,         Yj5QfJ2J39LvOCe        ,1,123456789,
  WggBwOjOjEEwaFr,kMfxDWDurNyF9j3      ,-3,123456789,
  </code></pre>
  
  <p>when I try to read data from this file line by line it is converting int into strings but I don't want that , the type should remain as it is after reading the file :</p>
  
  <p><strong>code :</strong> </p>
  
  <pre><code>with open(name,'r') as f:
      letters = f.readline().split(',')
      for l in letters:
          if l.index() == 0:
          print l, type(l)
  </code></pre>
  
  <p><strong>result :</strong> </p>
  
  <pre><code>AAKzAlazNghRnKk &lt;type 'str'&gt;
    gD6mLtXhOgIOqwb          &lt;type 'str'&gt;
  -7 &lt;type 'str'&gt;
  123456789 &lt;type 'str'&gt;
  </code></pre>