#!/usr/bin/python3.6 from urllib.request import urlopen currencies = ["ok","neo","dash","etc","eth","snt"] for cur in currencies: url = 'https://bittrex.com/Api/v2.0/pub/market/GetTicks?marketName=BTC-'+cur+'&tickInterval=fiveMin' x = urlopen(url) data = x.read() str2 = str(data,'utf-8') with open("btc-"+cur+".json", "w") as fichier: fichier.write(str2)