title: How to delete all rows at even indexes in a Dataframe?
body: <p>I have dataframe pandas;</p>
  
  <pre><code>        Data
    Id    
  ID_1    19
  ID_2    33
  ID_3    17
  ID_4    52
  ID_5    17
  ID_6    41
  </code></pre>
  
  <p>Id is index. how to drop row by index but all of ID with even number?</p>
  
  <p>this is my expected result:</p>
  
  <pre><code>        Data
    Id    
  ID_1    19
  ID_3    17
  ID_5    17
  </code></pre>