title: python pandas read_csv quotechar does not work
body: <p>I've read <a href="https://stackoverflow.com/questions/32743479/pandas-read-csv-with-extra-commas-in-column">this</a>, <a href="https://stackoverflow.com/questions/26595819/double-quoted-elements-in-csv-cant-read-with-pandas">this</a> and <a href="https://stackoverflow.com/questions/35686920/reading-csv-from-pandas-having-both-quotechar-and-delimiter-for-a-column-value">this</a> posts but despite I don't know why <code>quotechar</code> does not work at <code>pd.read_csv()</code> (Python 3, pandas 0.18.0 and 0.18.1). And how could I read a dataframe like this:</p>
  
  <pre><code>"column1","column2", "column3", "column4", "column5", "column6"
  "AM", 7, "1", "SD", "SD", "CR"
  "AM", 8, "1,2 ,3", "PR, SD,SD", "PR ; , SD,SD", "PR , ,, SD ,SD"
  "AM", 1, "2", "SD", "SD", "SD"
  </code></pre>
  
  <p>I want the following result:</p>
  
  <pre><code>Out[116]: 
    column1  column2 column3    column4       column5        column6
  0      AM        7       1         SD            SD             CR
  1      AM        8  1,2 ,3  PR, SD,SD  PR ; , SD,SD  PR , ,, SD,SD
  2      AM        1       2         SD            SD             SD
  </code></pre>
  
  <p>Thank you!!</p>