Fetch All Tickers

# -*- coding: utf-8 -*-

import os
import sys
import time

import ccxt  # noqa: E402


def print_exchanges():
   print('Supported exchanges:', ', '.join(ccxt.exchanges))


def print_usage():
   print("Usage: python", sys.argv[0], 'id')
   print("python", sys.argv[0], 'kraken')
   print("python", sys.argv[0], 'coinbasepro')
   print_exchanges()


try:

   id = sys.argv[1]  # get exchange id from command line arguments

   # check if the exchange is supported by ccxt
   exchange_found = id in ccxt.exchanges

   if exchange_found:

       print('Instantiating', id)

       # instantiate the exchange by id
       exchange = getattr(ccxt, id)()

       if exchange.has['fetchTickers'] != True:
           raise ccxt.NotSupported ('Exchange ' + exchange.id + ' does not have the endpoint to fetch all tickers from the API.')

       # load all markets from the exchange
       markets = exchange.load_markets()

       try:

           tickers = exchange.fetch_tickers()
           for symbol, ticker in tickers.items():
               print(
                   symbol,
                   ticker['datetime'],
                   'high: ' + str(ticker['high']),
                   'low: ' + str(ticker['low']),
                   'bid: ' + str(ticker['bid']),
                   'ask: ' + str(ticker['ask']),
                   'volume: ' + str(ticker['quoteVolume'] or ticker['baseVolume'])
               )

       except ccxt.DDoSProtection as e:
           print(type(e).__name__, e.args, 'DDoS Protection (ignoring)')
       except ccxt.RequestTimeout as e:
           print(type(e).__name__, e.args, 'Request Timeout (ignoring)')
       except ccxt.ExchangeNotAvailable as e:
           print(type(e).__name__, e.args, 'Exchange Not Available due to downtime or maintenance (ignoring)')
       except ccxt.AuthenticationError as e:
           print(type(e).__name__, e.args, 'Authentication Error (missing API keys, ignoring)')
   else:
       print('Exchange', id, 'not found')
       print_usage()

except Exception as e:

   print(type(e).__name__, e.args, str(e))
   print_usage()