import requests

r=requests.get("https://bittrex.com/api/v1.1/public/getmarkets")
data = r.json()
# print (len(data ["result"]))
for i in range (len (data["result"])):
    uri_end = (data["result"] [i] ["MarketName"])
    uri_beg = "https://bittrex.com/api/v1.1/public/getmarketsummary?market="
    uri = uri_beg + uri_end
   # print (uri)
    r2=requests.get(uri)


    data2 = r2.json()

    res = data2["result"]
  #  print (i)

    ask = data2 ["result"] [0] ["Ask"]
    bid = data2 ["result"] [0]  ["Bid"]
    vol = data2  ["result"] [0] ["BaseVolume"]
    rank = ((ask-bid)/bid)*vol
   # print(uri)
    print (uri_end,":", rank,":", vol)