我正在使用Python库开发一个应用程序,urllib由于无法访问URL,有时会出现异常情况.
但是,异常会在标准库堆栈中引发近6个级别:
/home/user/Workspace/application/main.py in call(path)
11 headers={'content-type': 'application/json'},
12 data=b'')
---> 13 resp = urllib.request.urlopen(req) ####### THIS IS MY CODE
14 return json.loads(resp.read().decode('utf-8'))
/usr/lib/python3.4/urllib/request.py in urlopen(url, data, timeout, cafile, capath, cadefault, context)
159 else:
160 opener = _opener
--> 161 return opener.open(url, data, timeout)
162
163 def install_opener(opener):
/usr/lib/python3.4/urllib/request.py in open(self, fullurl, data, timeout)
461 req = meth(req)
462
--> 463 response = self._open(req, data)
464
465 # post-process response
/usr/lib/python3.4/urllib/request.py in _open(self, req, data)
479 protocol = …