text_driver.py

import argparse
import config
from twilio.rest import Client

parser = argparse.ArgumentParser()
parser.add_argument('-r', '--recipient', 
                    help='Key of the recipient in the \
                          Recipients dict, currently \
                          one of {"SO", "Self"}.',
                    type=str)
parser.add_argument('-m', '--message',
                    help='String message that you want \
                          to send. Can be a string key \
                          to the messages dict.',
                    type=str)
args = parser.parse_args()


def parse():
    """
    parse()
    Validate the command line args, and return the recipient phone # 
    and message.

    Gets: nothing
    Returns:
        recipient, a string
        message, a string
    """
    if args.recipient not in config.RECIPIENTS:
        raise KeyError('Recipient not in config.RECIPIENTS')
    recipient = config.RECIPIENTS[args.recipient]

    if args.message in config.MESSAGES:
        message = config.MESSAGES[args.message]
    else:
        message = args.message

    return recipient, message


def send(recipient, message):
    """
    send(recipient, message)
    Creates a Client instance and uses it to send a SMS message
    
    Gets:
        recipient, a string
        message, a string
    Returns: Nothing
    """
    client = Client(config.SID, config.TWILIO_TOKEN)
    payload = client.messages.create(body=message, from_=config.TWILIO_NUMBER, to=recipient)


def main():
    recipient, message = parse()
    send(recipient, message)


if __name__ == '__main__':
    main()