Python: export selected env variables

env.py

#!/usr/bin/env python

import argparse
import os

parser = argparse.ArgumentParser(description='Export selected env variables.')

parser.add_argument('name', nargs='+',
                   help='name of env variable')

args = parser.parse_args()

def env_to_tuple (envName):
    return (envName, os.environ[envName])

namesList = vars(args)['name']

for name in namesList:
    # Escape symbols commonly used by Bash.
    value = os.environ[name].replace('"', '\\"').replace('$', '\\$').replace('`', '\\`')

    print('{}={}'.format(
        name,
        value
    ))