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This subsection describes the methods of a generator iterator. They can be used to control the execution of a generator function.Note that calling any of the generator methods below when the gener

原文：https://docs.djangoproject.com/en/1.6/topics/auth/customizing/Customizing authentication in DjangoThe authentication that comes with Django is good enough for most common cases, but you may

hasattr(object, name)说明：判断对象object是否包含名为name的特性（hasattr是通过调用getattr(ojbect, name)是否抛出异常来实现的）。参数object：对象。参数name：特性名称。示例：

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