coinfit.io api request

coinfit_api.py

import urllib
import hashlib
import time
import hmac
import requests

access_key = "access_key"
secret_key = "secret_key"

url = "/api/orders"
payload = {
    "access_key": access_key,
    "market": "LTC_BTC",
    "tonce": int(time.time()) * 1000
}

sorted_values = sorted(payload.items(), key=lambda val: val[0])
data=urllib.urlencode(sorted_values)
sss = "GET|%s|%s" % (url, data)

t = hmac.new(secret_key, sss, hashlib.sha256)
payload["signature"] = t.hexdigest()
req_url = "https://api.coinfit.io%s" % url
result = requests.get(url = req_url, params = payload)
print result.json()