python - 参数在传递给函数时从字典中消失

Question

在我的函数中，我从 session 中读取用户数据并将它们存储在字典中。接下来，我将它从 registration.backend 发送到“register”函数，但该函数以某种方式将其清空并抛出 KeyError。我的数据去哪儿了？来自函数调用“register”函数的代码:

data = request.session['temp_data']
email = data['email']

logging.debug(email)

password1 = data['password1']
userdata = {'email': email, 'password1': password1}

logging.debug(userdata)

backend = request.session['backend']

logging.debug(backend)

user = backend.register(userdata)

注册函数(全部来源:http://bitbucket.org/ubernostrum/django-registration/src/tip/registration/backends/default/init.py):

class DefaultBackend(object):
    def register(self, request, **kwargs):
        logging.debug("backend.register")
        logging.debug(kwargs)

        username, email, password = kwargs['email'], kwargs['email'], kwargs['password1']

调用它们后调试:

2010-07-09 19:24:35,020 DEBUG my@email.com
2010-07-09 19:24:35,020 DEBUG {'password1': u'a', 'email': u'my@email.com'}
2010-07-09 19:24:35,020 DEBUG <registration.backends.default.DefaultBackend object at 0x15c6090>
2010-07-09 19:24:35,021 DEBUG backend.register
2010-07-09 19:24:35,021 DEBUG {}

为什么数据会丢失？我做错了什么吗？

@为 Silent-Ghost 编辑

 register() takes exactly 2 arguments (3 given)

 112.  backend = request.session['backend']
 113. logging.debug(backend)
 114. user = backend.register(request, userdata) 

Answer 1

无需在 register 方法中乱用 **。您要做的只是将字典传递给 register 方法:

user = backend.register( request, userdata ) # you need to pass request as definition says

def register( self, request, userdata ): # note lack of **
    logging.debug("backend.register")
    logging.debug( userdata ) # should work as expected

    username, email, password = userdata['email'], userdata['email'], userdata['password1']