mtgox sign API v2 /1 /0

def perform(self, path, params,JSON=True,API_VERSION=0):
    self.__url_parts = "https://data.mtgox.com/api/"
        self.throttle()
        nonce =  str(int(time.time()*1000))
        if params != None:
            params = params.items()
        else:
            params = []

        params += [(u'nonce',nonce)]
        post_data = urllib.urlencode(params)
        ahmac = base64.b64encode(str(hmac.new(base64.b64decode(self.secret),post_data,hashlib.sha512).digest()))

        if API_VERSION == 0:
            url = self.__url_parts + '0/' + path
        elif API_VERSION == 1:
            url = self.__url_parts + '1/' + path
        else: #assuming API_VERSION 2
            url = self.__url_parts + '2/' + path
            api2postdatatohash = path + chr(0) + post_data          #new way to hash for API 2, includes path + NUL
            ahmac = base64.b64encode(str(hmac.new(base64.b64decode(self.secret),api2postdatatohash,hashlib.sha512).digest()))

        # Create header for auth-requiring operations
        header = {
            "User-Agent": 'genBTC-bot',
            "Rest-Key": self.key,
            "Rest-Sign": ahmac
            }

        while True:
            try:
                req = urllib2.Request(url, post_data, header)
                with closing(urllib2.urlopen(req, post_data,timeout=self.timeout)) as res:
                    if JSON == True:
                        try:
                            data = json.load(res,object_hook=json_ascii.decode_dict)
                            if "error" in data:
                                if data["error"] == "Not logged in.":
                                    print UserError(data["error"])
                                else:
                                    print ServerError(data["error"])
                            else:
                                return data
                        except ValueError as e:
                            print "JSON Error: %s. Most likely BLANK Data. Still trying to figure out what happened here." % e
                            data = "dummy"
                            unchobj = res
                            print unchobj.read()
                    else:
                        data = res.read()
                        return data
            except urllib2.HTTPError as e:
                print e
            except urllib2.URLError as e:
                print "URL Error %s: %s." % (e.reason,e)
            except ssl.SSLError as e:
                print "SSL Error: %s." % e
            except Exception as e:
                print "General Error: %s" % e
            print "Retrying Connection...."