get total amount of dollars for all your crypto coins

crypto-total.py

#!/usr/bin/env python 

import sys
import urllib2
import json

endpoint = "https://api.coinmarketcap.com/v1/ticker/"
args = 'bitcoin 1 litecoin 1 ethereum 1'.split(' ')


def main(coins):
    total = 0
    for c, amount in coins:
        num_amount = float(amount)
        price = float(json.load(urllib2.urlopen(endpoint + c))[0]['price_usd'])
        total += price * num_amount
    print '%.2f' % total, '$'

if __name__ == '__main__':
    if len(sys.argv) > 1:
        args = sys.argv[1:]
    coins = zip(args[::2], args[1::2])
    main(coins)