start

#!/usr/bin/env python3

import decimal
import argparse
from operator import itemgetter
import pymarketcap

parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('-m', '--minimum_vol', type=float, help='Minimum Percent volume per exchange to have to count', default=1)
parser.add_argument('-p', '--pairs', nargs='*', default=[], help='Pairs the coins can be arbitraged with - default=all')
parser.add_argument('-l', '--coin_list', nargs='*', default=[], help='Replaces the number of top coins with a custom list of currencies')
parser.add_argument('-c', '--coins_shown', type=int, default=10, help='Number of coins to show')
parser.add_argument('-e', '--exchanges', nargs='*', help='Acceptable Exchanges - default=all', default=[])
parser.add_argument('-s', '--simple', help='Toggle off errors and settings', default=False, action="store_true")
parser.add_argument('-t', '--top', type=int, help='Set the number of coins to run with', default=100)
args = parser.parse_args()

cmc = pymarketcap.Pymarketcap()
info = []
count = 1
lowercase_exchanges = [x.lower() for x in args.exchanges]
coin_format = '{: <25} {: >6}% {: >10} {: <15} {: <10} {: >7}% {: <10} {: <15} {: <10} {: >8}%'

if not args.simple:
    mode = 'TOP'
    if args.coin_list:
        mode = 'COIN_LIST'
    print('CURRENT SETTINGS\n',
          '‣ MINIMUM_PERCENT_VOL: {}'.format(args.minimum_vol),
          '‣ TRADING_PAIRS: {}'.format(args.pairs),
          '‣ COINS_SHOWN: {}'.format(args.coins_shown),
          '‣ EXCHANGES: {}'.format(lowercase_exchanges),
          '‣ ALL_PAIRS: {}'.format(not args.pairs),
          '‣ ALL_EXCHANGES: {}'.format(not args.exchanges),
          '‣ {}: {}'.format(mode, args.coin_list or args.top),
          sep='\n')


if args.coin_list:
    coin_data = {coin: cmc.ticker(coin)['data'] for coin in args.coin_list}
elif args.top > 100:
    count = args.top
    size = 100
    coin_data = {}
    while count > 0:
        if count - size < 0:
            size = count
        coin_data.update(cmc.ticker(limit=size, start=args.top-count)['data'])
        count -= size
else:
    coin_data = cmc.ticker(limit=args.top)['data']
for id_, coin in coin_data.items():
    try:
        markets = cmc.markets(coin["id"])
    except Exception as e:
        markets = cmc.markets(coin["symbol"])
    best_price = 0
    best_exchange = ''
    best_pair = ''
    worst_price = 999999
    worst_exchange = ''
    worst_pair = ''
    has_markets = False
    for market in markets["markets"]:
        trades_into = market["pair"].replace(coin["symbol"],"").replace("-","").replace("/","")
        if (market['percent_volume'] >= args.minimum_vol and 
                market['updated'] and 
                (trades_into in args.pairs or not args.pairs) and 
                (market['source'].lower() in lowercase_exchanges or not args.exchanges)
           ):
            has_markets = True
            if market['price'] >= best_price:
                best_price = market['price']
                best_exchange = market['source']
                best_pair = trades_into
                best_volume = market['percent_volume']
            if market['price'] <= worst_price:
                worst_price = market['price']
                worst_exchange = market['source']
                worst_pair = trades_into
                worst_volume = market['percent_volume']
    if has_markets:
        info.append([coin['name'],
                     round((best_price/worst_price-1)*100,2),
                     worst_price,
                     worst_exchange,
                     worst_pair,
                     round(worst_volume, 2),
                     best_price,
                     best_exchange,
                     best_pair,
                     round(best_volume, 2)
                    ])
    elif not args.simple:
        print(coin['name'],'had no markets that fit the criteria.')

    print('[{}/{}]'.format(count, args.top),end='\r')
    count += 1

# show data
info = sorted(info, key=itemgetter(1), reverse=True)
print(coin_format.format("COIN","CHANGE","BUY PRICE","BUY AT","BUY WITH","BUY VOL","SELL PRICE","SELL AT","SELL WITH","SELL VOL"))
for coin in info[:args.coins_shown]:
    print(coin_format.format(*coin))