摘要： django中得signals和操作系统（linux）中的signal完全是两会事，后者的signal是软件中断，提供一种处理异步事件得方法，信号是系统定义好的，可用作进程间传递消息得一种方法，而django中的信号只是一个普通的类，不能跨进程，看其代码更像一个。。。callback。。。django signal类定义在django/dispatch/dispatch.py中[python]view plaincopyprint?classSignal(object):def__init__(self,providing_args=None):#providing_args定义receive 阅读全文

摘要： The Django authentication system provided in django.contrib.auth requires the end user to authenticate themselves using a username and password. However, it is often desireable to allow users to log in using an email address rather than a username. There are a few different ways to accomplish this a 阅读全文