pytho获取google验证码

import time
import base64
import sys
import hashlib
import hmac
import struct

def google_code():
    key = base64.b32decode('CSF5WCJP5GH3CODA')
    msg = struct.pack(">Q", int(time.time()) // 30)
    code = hmac.new(key, msg, hashlib.sha1).digest()

    # 版本判断
    if sys.version_info > (2, 7):
        o = code[19] & 15
    else:
        o = ord(code[19]) & 15
    code = (struct.unpack(">I", code[o:o + 4])[0] & 0x7fffffff) % 1000000
    return '%06d' % code

ggcode=google_code()