filter.py

import ccxt
import os 
import re

# configure exchange
exchange = getattr(ccxt, 'binance')({
  'apiKey': os.environ['APIKEY'],
  'secret': os.environ['SECRET'],
  'timeout': 10000,
  'enableRateLimit': True
})

# load markets and all coin_pairs
exchange.load_markets()
coin_pairs = exchange.symbols

# list of coin pairs which are active and use BTC as base coin
valid_coin_pairs = []
# load only coin_pairs which match regex and are active
regex = '^.*/BTC'

for coin_pair in coin_pairs:
  if re.match(regex, coin_pair) and exchange.markets[coin_pair]['active']:
    valid_coin_pairs.append(coin_pair)