old_contents: #!/usr/bin/env python
  
  from __future__ import print_function
  
  import pymysql
  
  conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='', database='mysql')
  
  cur = conn.cursor()
  
  cur.execute("SELECT Host,User FROM user")
  
  print(cur.description)
  
  print()
  
  for row in cur:
     print(row)
  
  cur.close()
  conn.close()
  
new_contents: #!/usr/bin/env python
  
  from __future__ import print_function
  
  import pymysql
  
  conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='', db='mysql')
  
  cur = conn.cursor()
  
  cur.execute("SELECT Host,User FROM user")
  
  print(cur.description)
  
  print()
  
  for row in cur:
     print(row)
  
  cur.close()
  conn.close()
  
subject: Update example.py