title: replace single quote to double quote python pandas dataframe
body: <p>I want to replace single quote(') to double quote(") to make it proper json column value in python dataframe.</p>
  
  <p>e.g. csv file looks like...</p>
  
  <pre><code>Unit Id Batch Id                               Items prod
  A108    qa120  {'A': 123, 'B': 342, 'C': 454}   
  P258    re015  {'A': 124, 'B': 234, 'C': 343} 
  </code></pre>
  
  <p>I'm reading these values from csv to pandas dataframe. I tried several ways, but no luck.</p>
  
  <pre><code>df.replace("'",'"',inplace=True)
  df.['&lt;column_name&gt;'].str.replace(r"[\',]",'"')
  df = df['&lt;column_name&gt;'].str.replace(r"[\',]",'"')
  </code></pre>
  
  <p>Thanks for your help  in advance.</p>