#!/usr/bin/python3

import psycopg2
import sys

if len(sys.argv) < 2:
   print(f"Usage: {sys.argv[0]} beerID")
   exit()
try:
   bid = sys.argv[1]
   conn = psycopg2.connect("dbname=ass1")
   cur = conn.cursor()
   print(cur.mogrify(f"select id,name from beers where id = {bid}"))
   t = cur.fetchone()
   if t is None:
      print("No such beer")
   else:
      id,name = t
      print(name)
   conn.close()
except Exception as e:
   print(e)