title: pandas data frame removing the first row of every numbers
body: <p>So, basically I have a data frame that has the first column looks like this:</p>
  
  <pre><code>#1
  #2 
  #2
  #3
  #3
  #3
  #3
  #4
  #4
  #5
  </code></pre>
  
  <p>As you can see, first column is consisting of randomly repeated numbers.</p>
  
  <p>First, I have to remove all the '#' then I have to remove the first row of each numbers. Since, #1 has only one row, it should go away, and only the second row of #2 remains,,, so on.</p>