Script to check balances across exchanges implemented in `ccxt`

check_balance.py

import asyncio
import ccxt.async as ccxt
from collections import defaultdict

exchanges = list()
exchanges.append(('binance', apiKey, secret))
exchanges.append(('livecoin', apiKey, secret))

tasks = list()
tasks += [ccxt.coinmarketcap({'timeout':100000}).fetch_tickers(params={'limit':0})]
tasks += [getattr(ccxt, exchange)({'apiKey': apiKey, 'secret': secret}).fetch_balance() for exchange, apiKey, secret in exchanges]

tasks = [asyncio.ensure_future(task) for task in tasks]
pending = asyncio.Task.all_tasks()
loop = asyncio.get_event_loop()
_ = loop.run_until_complete(asyncio.gather(*pending))

coinmarketcap = tasks[0].result()
balances = [task.result() for task in tasks[1:]]

total_balance = defaultdict(float)

for balance in balances:
    for currency, amount in balance['total'].items():
        total_balance[currency] += amount

usd_balance = 0.0
missing_currencies = []

for currency, amount in total_balance.items():
    if currency+'/USD' in coinmarketcap:
        usd_balance += coinmarketcap[currency+'/USD']['last']*amount 
    elif amount > 0.0:
        missing_currencies.append(currency)
        
print('Currencies not on coinmarketcap: {}'.format(missing_currencies))

print('Total balance: ${}'.format(usd_balance))