Generate a list of ddi's to add to a flag

aws.py

#!/usr/bin/env python
#
# Generate a list of flags for a set of customer DDI's from a csv file.
#
# Usage:
#    python aws.py ddi_file.csv

import sys
import json

if len(sys.argv) < 2:
    sys.exit('Please enter a csv file: python {0} csv_file.csv'.format(sys.argv[0]))

with open(sys.argv[1], mode='U') as ddi_list:
    DDI_LIST = [line.strip() for line in ddi_list.readlines()]

flags = []

for ddi in DDI_LIST:
    flags.append({"args": "{0}".format(ddi), "name": "Tenant"})

print json.dumps(flags)