class KindOfCoupons:

   def get_coupons(self, cur, names):
       coupons = {}
       for name in names:
           coupons[name] = cur.execute("SELECT * FROM "" + name + "" ;")
       return coupons

   def connect_redshift(self):
       conn = psycopg2.connect("dbname=dbname host=host user=user password=password port=000")
       return conn.cursor()

   def get_coupon_used_type(self):
       cur = self.connect_redshift()
       names = ["TABLE", "TABLE_B", "TABLE_C"]
       coupons = self.get_coupons(cur, names)
       coupons[names[0]][0]