title: Remove double quotes in python pandas for all column's values
body: <p>so I am reading a CSV file and then only keeping certain columns and rewriting the file. The issues I have is that one column (say ColumnA) has it's values in double quotation marks. Is there an easy way for me to achieve this task and also remove those double quotes?</p>
  
  <pre><code>a = pd.read_csv(filename,low_memory=False)
  
  a1 = a[['ColumnA','ColumnB']]
  
  a1.to_csv('filelocation')
  </code></pre>