Python-сообщество

 import urllib
import urllib2
import json
import time
import hmac,hashlib
 
def createTimeStamp(datestr, format="%Y-%m-%d %H:%M:%S"):
    return time.mktime(time.strptime(datestr, format))
 
class poloniex:
    def __init__(self, APIKey, Secret):
        self.APIKey = APIKey
        self.Secret = Secret
 
    def post_process(self, before):
        after = before
 
        # Add timestamps if there isnt one but is a datetime
        if('return' in after):
            if(isinstance(after['return'], list)):
                for x in xrange(0, len(after['return'])):
                    if(isinstance(after['return'][x], dict)):
                        if('datetime' in after['return'][x] and 'timestamp' not in after['return'][x]):
                            after['return'][x]['timestamp'] = float(createTimeStamp(after['return'][x]['datetime']))
                           
        return after
 
    def api_query(self, command, req={}):
 
        if(command == "returnTicker" or command == "return24Volume"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + command))
            return json.loads(ret.read())
        elif(command == "returnOrderBook"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + command + '&currencyPair=' + str(req['currencyPair'])))
            return json.loads(ret.read())
        elif(command == "returnMarketTradeHistory"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + "returnTradeHistory" + '&currencyPair=' + str(req['currencyPair'])))
            return json.loads(ret.read())
        else:
            req['command'] = command
            req['nonce'] = int(time.time()*1000)
            post_data = urllib.urlencode(req)
 
            sign = hmac.new(self.Secret, post_data, hashlib.sha512).hexdigest()
            headers = {
                'Sign': sign,
                'Key': self.APIKey
            }
 
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/tradingApi', post_data, headers))
            jsonRet = json.loads(ret.read())
            return self.post_process(jsonRet)
 
 
    def returnTicker(self):
        return self.api_query("returnTicker")
 
    def return24Volume(self):
        return self.api_query("return24Volume")
 
    def returnOrderBook (self, currencyPair):
        return self.api_query("returnOrderBook", {'currencyPair': currencyPair})
 
    def returnMarketTradeHistory (self, currencyPair):
        return self.api_query("returnMarketTradeHistory", {'currencyPair': currencyPair})