text: Title: Insert into statement table using postgres
  Body: Hi all,
  
  I have my chatterbot connected to postgres database. The bot is trained initially.
  
  Now, I am trying to insert into the statement table using the command 
  
  > text = "Can you cook"
  > cur.execute('INSERT INTO statement (text) VALUES (%s)', text)
  
  But throws an error 
  
  > TypeError: not all arguments converted during string formatting
  
  Is there a way to insert a row into the statement table (from python script) using postgres commands.
  
  I am able to update and delete the rows though.
  
  Many thanks