e.code -> 403
e.read -> b'{"result":"error","error":"Identification required to access private API","token":"login_error_invalid_rest_key"}'

import time
import urllib.parse
import urllib.request
import base64
import hmac
import hashlib

url = "https://data.mtgox.com/api/1/generic/info"

GOX_secret = "your secret here"
GOX_secret = base64.b64decode((GOX_secret.encode()))
GOX_key = "your keyname here"

params = {"nonce":str(int(time.time()*1000))}
post_data = urllib.parse.urlencode(params)

#ahmac = base64.b64encode(str(hmac.new(base64.b64decode(self.secret),post_data,hashlib.sha512).digest()))
H = hmac.new(GOX_secret, post_data.encode(), hashlib.sha512).digest()
sign = base64.b64encode(H)
header = {"User-Agent": 'myGoxAPI', "Rest-Key": GOX_key, "Rest-Sign": sign}


req = urllib.request.Request(url, post_data, header) #POST

try:
        response = urllib.request.urlopen(req, post_data.encode()) #POST
except urllib.error.HTTPError as e:
        print("e.code ->", e.code)
        print("e.read ->", (e.read()))
        exit(5)

print("It'd be nice to get here")