title: Convert spark DataFrame column to python list
body: <p>I work on a dataframe with two column, mvv and count.</p>
  
  <pre><code>+---+-----+
  |mvv|count|
  +---+-----+
  | 1 |  5  |
  | 2 |  9  |
  | 3 |  3  |
  | 4 |  1  |
  </code></pre>
  
  <p>i would like to obtain two list containing mvv values and count value. Something like</p>
  
  <pre><code>mvv = [1,2,3,4]
  count = [5,9,3,1]
  </code></pre>
  
  <p>So, I tried the following code: The first line should return a python list of row. I wanted to see the first value:</p>
  
  <pre><code>mvv_list = mvv_count_df.select('mvv').collect()
  firstvalue = mvv_list[0].getInt(0)
  </code></pre>
  
  <p>But I get an error message with the second line:</p>
  
  <blockquote>
    <p>AttributeError: getInt</p>
  </blockquote>