因此，我使用代理服务器在基于大学的网络上操作我的电脑。因此，使用pip时，我尝试了很多方法来实现pypip的代理隧道。 但是我一直遇到同样的错误，因此我尝试删除代理，连接到非大学wifi并再次尝试。但是，即使我已经在Windows代理设置中关闭了代理服务器，它仍然会反复使用相同的代理地址。
Exception:
Traceback (most recent call last):
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\cli\base_command.py", l
ine 179, in main
status = self.run(options, args)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\commands\install.py", l
ine 315, in run
resolver.resolve(requirement_set)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\resolve.py", line 131,
in resolve
self._resolve_one(requirement_set, req)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\resolve.py", line 294,
in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\resolve.py", line 242,
in _get_abstract_dist_for
self.require_hashes
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\operations\prepare.py",
line 269, in prepare_linked_requirement
req.populate_link(finder, upgrade_allowed, require_hashes)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\req\req_install.py", li
ne 196, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\index.py", line 639, in
find_requirement
all_candidates = self.find_all_candidates(req.name)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\index.py", line 610, in
find_all_candidates
for page in self._get_pages(url_locations, project_name):
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\index.py", line 743, in
_get_pages
page = _get_html_page(location, session=self.session)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\index.py", line 229, in
_get_html_page
resp = _get_html_response(url, session=session)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\index.py", line 177, in
_get_html_response
"Cache-Control": "max-age=0",
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\sessions.py", li
ne 546, in get
return self.request('GET', url, **kwargs)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_internal\download.py", line 403,
in request
return super(PipSession, self).request(method, url, *args, **kwargs)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\sessions.py", li
ne 533, in request
resp = self.send(prep, **send_kwargs)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\sessions.py", li
ne 646, in send
r = adapter.send(request, **kwargs)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\cachecontrol\adapter.py",
line 53, in send
resp = super(CacheControlAdapter, self).send(request, **kw)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\adapters.py", li
ne 412, in send
conn = self.get_connection(request.url, proxies)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\adapters.py", li
ne 309, in get_connection
proxy_manager = self.proxy_manager_for(proxy)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\requests\adapters.py", li
ne 199, in proxy_manager_for
**proxy_kwargs)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\urllib3\poolmanager.py",
line 450, in proxy_from_url
return ProxyManager(proxy_url=url, **kw)
File "c:\users\deepa\appdata\local\programs\python\python37-32\lib\site-packages\pip_vendor\urllib3\poolmanager.py",
line 401, in init
raise ProxySchemeUnknown(proxy.scheme)
pip._vendor.urllib3.exceptions.ProxySchemeUnknown: Not supported proxy scheme adityaga