old_contents: import sys
  import argparse
  
  from kraken_interface import KrakenInterface
  from poloniex_interface import PoloniexInterface
  
  from prettytable import PrettyTable
  
  def amount(argv, data):
      ratio_btc = float(data['BTC_EUR'][0])
  
      coins = {
              'BTC': [argv.btc, float(1.0)],
              'LTC': [argv.ltc, float(data['LTC_BTC'][0])],
              'BCH': [argv.bch, float(data['BCH_BTC'][0])],
              'ETH': [argv.eth, float(data['ETH_BTC'][0])],
              'ETC': [argv.etc, float(data['ETC_BTC'][0])]
      }
  
      ret = {}
  
      for k, v in coins.items():
          if (v[0] != None):
              ret[k] = [v[0], v[0]*v[1], v[0]*v[1]*ratio_btc]
  
      return ret
  
  def main(argv):
      if (argv.exchange == 'polo'):
          exchange = PoloniexInterface()
      else:
          exchange = KrakenInterface()
  
      ticker_data = exchange.get_data()
  
      pairs_table = PrettyTable(['Pair', 'Last', 'High', 'Low'])
      for k, v in ticker_data.items():
          pairs_table.add_row([k, v[0], v[1], v[2]])
  
      print(pairs_table)
  
      current_coins = amount(argv, ticker_data)
  
      summary = [0.0, 0.0]
  
      if (argv.exchange == 'kraken' and current_coins):
          coins_table = PrettyTable(['Coin', 'QTY', 'BTC', 'EUR'])
          for k, v in current_coins.items():
              coins_table.add_row([k, round(v[0], 8), round(v[1], 8), round(v[2], 2)])
              summary = [summary[0]+v[1], summary[1]+v[2]]
  
          coins_table.add_row(['', '', '', ''])
          coins_table.add_row(['', '', round(summary[0], 8), round(summary[1], 2)])
          print(coins_table)
  
  
  if __name__ == "__main__":
      parser = argparse.ArgumentParser(description = 'Show ticker data for major crypto currencies.')
      parser.add_argument('--polo', '--poloniex', dest='exchange', action='store_const', const='polo', default='kraken', help='Poloniex exchange')
      parser.add_argument('--btc', type=float, help='# of BTC (Bitcoin)')
      parser.add_argument('--ltc', type=float, help='# of LTC (Litecoin)')
      parser.add_argument('--bch', type=float, help='# of BCH (Bitcoin Cash)')
      parser.add_argument('--eth', type=float, help='# of ETH (Ethereum)')
      parser.add_argument('--etc', type=float, help='# of ETC (Ethereum Classic)')
      argv = parser.parse_args()
  
      main(argv)
  
new_contents: import sys
  import argparse
  
  from kraken_interface import KrakenInterface
  from poloniex_interface import PoloniexInterface
  
  from prettytable import PrettyTable
  
  def amount(argv, data):
      ratio_btc = float(data['BTC_EUR'][0])
  
      coins = {
              'BTC': [argv.btc, float(1.0)],
              'LTC': [argv.ltc, float(data['LTC_BTC'][0])],
              'BCH': [argv.bch, float(data['BCH_BTC'][0])],
              'ETH': [argv.eth, float(data['ETH_BTC'][0])],
              'ETC': [argv.etc, float(data['ETC_BTC'][0])]
      }
  
      ret = {}
  
      for k, v in coins.items():
          if (v[0] != None):
              ret[k] = [v[0], v[0]*v[1], v[0]*v[1]*ratio_btc]
  
      return ret
  
  def main(argv):
      if (argv.exchange == 'polo'):
          exchange = PoloniexInterface()
      else:
          exchange = KrakenInterface()
  
      ticker_data = exchange.get_data()
  
      pairs_table = PrettyTable(['Pair', 'Last', 'High', 'Low'])
      for k, v in sorted(ticker_data.items()):
          pairs_table.add_row([k, v[0], v[1], v[2]])
  
      print(pairs_table)
  
      current_coins = amount(argv, ticker_data)
  
      summary = [0.0, 0.0]
  
      if (argv.exchange == 'kraken' and current_coins):
          coins_table = PrettyTable(['Coin', 'QTY', 'BTC', 'EUR'])
          for k, v in sorted(current_coins.items()):
              coins_table.add_row([k, round(v[0], 8), round(v[1], 8), round(v[2], 2)])
              summary = [summary[0]+v[1], summary[1]+v[2]]
  
          coins_table.add_row(['', '', '', ''])
          coins_table.add_row(['', '', round(summary[0], 8), round(summary[1], 2)])
          print(coins_table)
  
  
  if __name__ == "__main__":
      parser = argparse.ArgumentParser(description = 'Show ticker data for major crypto currencies.')
      parser.add_argument('--polo', '--poloniex', dest='exchange', action='store_const', const='polo', default='kraken', help='Poloniex exchange')
      parser.add_argument('--btc', type=float, help='# of BTC (Bitcoin)')
      parser.add_argument('--ltc', type=float, help='# of LTC (Litecoin)')
      parser.add_argument('--bch', type=float, help='# of BCH (Bitcoin Cash)')
      parser.add_argument('--eth', type=float, help='# of ETH (Ethereum)')
      parser.add_argument('--etc', type=float, help='# of ETC (Ethereum Classic)')
      argv = parser.parse_args()
  
      main(argv)
  
subject: Add order to tables