如果有人感兴趣，我会自己解决.

If somebody interesting, I've solve this by myself.

#!/usr/bin/python

import hashlib
import hmac
import requests
import time

apikey = '';
apisecret = '';

def request_comkort( url, payload ):
        tosign = "&".join( [i + '=' + payload[i] for i in payload] )
        sign = hmac.new( apisecret, tosign , hashlib.sha512);
        headers = {'sign': sign.hexdigest(), 'nonce': int( time.time() ), 'apikey': apikey }
        r = requests.post(url, data=payload, headers=headers)
        return r.text

# Get balance
print request_comkort( "https://api.comkort.com/v1/private/user/balance";, {} )
# Get Open Orders 
print request_comkort( "https://api.comkort.com/v1/private/order/list";, {'market_alias': "DOGE_LTC" } )
# Make Ask
print request_comkort( "https://api.comkort.com/v1/private/order/sell";, { 'market_alias':"HTML_DOGE", "amount": "1000", "price": "123123" } )
# Cancel order
print request_comkort( "https://api.comkort.com/v1/private/order/cancel";, { 'order_id': 10943 } )