Python中的raise语句 - V2EX
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V2EX    Python

Python中的raise语句

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  •   hhrmatata 2013-04-08 23:36:23 +08:00 7244 次点击
    这是一个创建于 4641 天前的主题,其中的信息可能已经有所发展或是发生改变。
    raise语句不是作为引起异常的吗?
    web.py的cookbook中的这个rasie语句是什么用法呢?

        class SomePage:
            def POST(self):
                # Do some application logic here, and then:
                raise web.seeother('/someotherpage')
    6 条回复    1970-01-01 08:00:00 +08:00
    binux
        1
    binux  
       2013-04-08 23:40:46 +08:00
    一个函数的返回除了return就是raise了
    如果不想return状态太多,借用一下很正常
    顺带,tornado是修改类状态
    paloalto
        2
    paloalto  
       2013-04-08 23:41:13 +08:00
    跳转 303还是301来着?记不清了。
    paloalto
        3
    paloalto  
       2013-04-08 23:45:33 +08:00   1
    以前遇到过一个类似的问题:
    “web.py的raise web.seeother()”:
    http://www.douban.com/note/259251417/
    dreampuf
        4
    dreampuf  
       2013-04-09 01:23:34 +08:00   1
    return, continue, break, yield, raise 本质都是为流程控制服务,你可以在WSGI函数里找到这种异常流程的处理。
    hhrmatata
        5
    hhrmatata  
    OP
       2013-04-09 10:10:24 +08:00
    我就先这么理解吧:web.seeother('/someotherpage')返回了一个303异常。
    Zhongwei
        6
    Zhongwei  
       2013-04-09 11:00:45 +08:00   1
    看一下 https://github.com/webpy/webpy/blob/master/web/webapi.py 里 seeother 的实现就一目了然了。seeother 继承自 class Redirect(HTTPError)
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