#!/usr/bin/python3

import sys
import psycopg2

# define any local helper functions here

### set up some globals

usage = f"Usage: {sys.argv[0]} Params ..."
db = None

# process command-line args

try:
  # connect to database

  # manipulate database

except Exception as err:
  print("DB error: ", err)
finally:
  if db:
    db.close()