python requests.exceptions.ConnectionError

今天遇到一个奇葩问题,

1.r.request.post(url)

2..print r. status_code

居然第一步就报错了,原因是url不正确,按道理应该可以走到第二步然后输入404的

?

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import requests try:     requests.get("http://not.a.real.url/really_not") except requests.exceptions.ConnectionError as e:     pass >>> e ConnectionError(MaxRetryError("HTTPConnectionPool(host='not.a.real.url', port=80): Max retries exceeded with url: /really_not (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)",),) >>> e.args (MaxRetryError("HTTPConnectionPool(host='not.a.real.url', port=80): Max retries exceeded with url: /really_not (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)",),) >>> e.args[0] MaxRetryError("HTTPConnectionPool(host='not.a.real.url', port=80): Max retries exceeded with url: /really_not (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)",) >>> dir(e.args[0]) ['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__',  '__getitem__', '__getslice__', '__hash__', '__init__', '__module__', '__new__',  '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setstate__', '__sizeof__',  '__str__', '__subclasshook__', '__unicode__', '__weakref__', 'args', 'message', 'pool',  'reason', 'url'] >>> e.args[0].reason gaierror(-2, 'Name or service not known') >>> dir(e.args[0].reason) ['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__',  '__getitem__', '__getslice__', '__hash__', '__init__', '__module__', '__new__',  '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setstate__', '__sizeof__',  '__str__', '__subclasshook__', '__unicode__', '__weakref__', 'args', 'errno', 'filename',  'message', 'strerror'] >>> e.args[0].reason.errno -2

　　这样就可以异常设置值

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try:     r = login_session.post(self.url, data=self.data,headers=self.headers) except requests.exceptions.ConnectionError as e:     # print e.args[0].reason #[Errno 11004] getaddrinfo failed     if e.args[0].reason.errno== 11004:         r = 404 final:     return r

　　得到r,即使不是response类型,也能获取值

getattr(result, 'status_code', result)