pipexception：AttributeError：'NoneType'对象没有属性'startswith'

当我使用pip来安装一些软件包时，我总是得到相同的exception：

PS C:\Users\84682\Desktop> pip install django -v Config variable 'Py_DEBUG' is unset, Python ABI tag may be incorrect Config variable 'WITH_PYMALLOC' is unset, Python ABI tag may be incorrect Collecting django 1 location(s) to search for versions of django: * https://pypi.python.org/simple/django/ Getting page https://pypi.python.org/simple/django/ Looking up "https://pypi.python.org/simple/django/" in the cache No cache entry available Starting new HTTPS connection (1): pypi.python.org Cleaning up... Exception: Traceback (most recent call last): File "d:\python\python3.5\lib\site-packages\pip\basecommand.py", line 215, in main status = self.run(options, args) File "d:\python\python3.5\lib\site-packages\pip\commands\install.py", line 324, in run requirement_set.prepare_files(finder) File "d:\python\python3.5\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files ignore_dependencies=self.ignore_dependencies)) File "d:\python\python3.5\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file require_hashes File "d:\python\python3.5\lib\site-packages\pip\req\req_install.py", line 278, in populate_link self.link = finder.find_requirement(self, upgrade) File "d:\python\python3.5\lib\site-packages\pip\index.py", line 465, in find_requirement all_candidates = self.find_all_candidates(req.name) File "d:\python\python3.5\lib\site-packages\pip\index.py", line 423, in find_all_candidates for page in self._get_pages(url_locations, project_name): File "d:\python\python3.5\lib\site-packages\pip\index.py", line 568, in _get_pages page = self._get_page(location) File "d:\python\python3.5\lib\site-packages\pip\index.py", line 683, in _get_page return HTMLPage.get_page(link, session=self.session) File "d:\python\python3.5\lib\site-packages\pip\index.py", line 792, in get_page "Cache-Control": "max-age=600", File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 488, in get return self.request('GET', url, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\download.py", line 386, in request return super(PipSession, self).request(method, url, *args, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 475, in request resp = self.send(prep, **send_kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 596, in send r = adapter.send(request, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\cachecontrol\adapter.py", line 47, in send resp = super(CacheControlAdapter, self).send(request, **kw) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\adapters.py", line 423, in send timeout=timeout File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connectionpool.py", line 589, in urlopen self._prepare_proxy(conn) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connectionpool.py", line 797, in _prepare_proxy conn.connect() File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connection.py", line 254, in connect conn = self._new_conn() File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connection.py", line 142, in _new_conn (self.host, self.port), self.timeout, **extra_kw) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\util\connection.py", line 66, in create_connection if host.startswith('['): AttributeError: 'NoneType' object has no attribute 'startswith' Looking up "https://pypi.python.org/pypi/pip/json" in the cache No cache entry available Starting new HTTPS connection (1): pypi.python.org There was an error checking the latest version of pip Traceback (most recent call last): File "d:\python\python3.5\lib\site-packages\pip\utils\outdated.py", line 126, in pip_version_check headers={"Accept": "application/json"}, File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 488, in get return self.request('GET', url, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\download.py", line 386, in request return super(PipSession, self).request(method, url, *args, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 475, in request resp = self.send(prep, **send_kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\sessions.py", line 596, in send r = adapter.send(request, **kwargs) File "d:\python\python3.5\lib\site-packages\pip\_vendor\cachecontrol\adapter.py", line 47, in send resp = super(CacheControlAdapter, self).send(request, **kw) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\adapters.py", line 423, in send timeout=timeout File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connectionpool.py", line 589, in urlopen self._prepare_proxy(conn) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connectionpool.py", line 797, in _prepare_proxy conn.connect() File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connection.py", line 254, in connect conn = self._new_conn() File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\connection.py", line 142, in _new_conn (self.host, self.port), self.timeout, **extra_kw) File "d:\python\python3.5\lib\site-packages\pip\_vendor\requests\packages\urllib3\util\connection.py", line 66, in create_connection if host.startswith('['): AttributeError: 'NoneType' object has no attribute 'startswith' 

我发现类似的问题是python无法在win10中使用 ， AttributeError：'NoneType'对象没有属性'startswith'，并且无法在Python3.6中安装pip 。 但他们没有答案。

我在网上search了很长时间。 但没用。 我不知道。 请帮助或尝试提供一些想法如何实现这一点。