OKCOIN交易所SDK-Python版

#!/usr/bin/python
# -*- coding: utf-8 -*-
#用于访问OKCOIN 现货REST API
import time,datetime
import json
import urllib.request,urllib.parse
import hashlib,hmac

import numpy as np


class OKCoin:

    def __init__(self, apikey, secretkey):
        self.__url = "https://www.okcoin.cn/api/v1/"
        self.__apikey = apikey
        self.__secretkey = secretkey

    # 获取OKCoin行情
    def ticker(self, symbol = 'btc_cny'):
        url = self.__url + 'ticker.do?symbol=%s'%(symbol)
        return self.http_request(url)

    # 获取OKCoin市场深度
    def depth(self, symbol = 'btc_cny'):
        url = self.__url + 'depth.do?symbol=%s'%(symbol)
        return self.http_request(url)

    # 获取OKCoin交易信息(600条)
    def trades(self, symbol = 'btc_cny'):
        url = self.__url + 'trades.do?symbol=%s'%(symbol)
        return self.http_request(url)

    # 获取OKCoin的K线数据
    def kline(self, symbol = 'btc_cny', type = '4hour', size = '100', since = 0):
        url = self.__url + 'kli