@app.route(‘/‘)
def index():
    signature = request.args.get("signature")
    timestamp = request.args.get("timestamp")
    nonce = request.args.get("nonce")
    echostr = request.args.get("echostr")
    token = "设置的token"

    list = [token, timestamp, nonce]
    list.sort()
    sha1 = hashlib.sha1()
    map(sha1.update, list)
    hashcode = sha1.hexdigest()
    print "handle/GET func: hashcode, signature: ", hashcode, signature
    if hashcode == signature:
        return echostr
    return "ok"