Trouble in Installing through pip3 - proxy

Question

I am trying to install packages through pip3
pip3 install keras
But, the error is as follows:
Collecting keras
Exception:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/lib/python3/dist-packages/pip/commands/install.py", line 353, in run
wb.build(autobuilding=True)
File "/usr/lib/python3/dist-packages/pip/wheel.py", line 749, in build
self.requirement_set.prepare_files(self.finder)
File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "/usr/lib/python3/dist-packages/pip/req/req_set.py", line 554, in _prepare_file
require_hashes
File "/usr/lib/python3/dist-packages/pip/req/req_install.py", line 278, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "/usr/lib/python3/dist-packages/pip/index.py", line 465, in find_requirement
all_candidates = self.find_all_candidates(req.name)
File "/usr/lib/python3/dist-packages/pip/index.py", line 423, in find_all_candidates
for page in self._get_pages(url_locations, project_name):
File "/usr/lib/python3/dist-packages/pip/index.py", line 568, in _get_pages
page = self._get_page(location)
File "/usr/lib/python3/dist-packages/pip/index.py", line 683, in _get_page
return HTMLPage.get_page(link, session=self.session)
File "/usr/lib/python3/dist-packages/pip/index.py", line 792, in get_page
"Cache-Control": "max-age=600",
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/sessions.py", line 521, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python3/dist-packages/pip/download.py", line 386, in request
return super(PipSession, self).request(method, url, *args, **kwargs)
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/sessions.py", line 508, in request
resp = self.send(prep, **send_kwargs)
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/sessions.py", line 618, in send
r = adapter.send(request, **kwargs)
File "/usr/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 47, in send
resp = super(CacheControlAdapter, self).send(request, **kw)
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/adapters.py", line 405, in send
conn = self.get_connection(request.url, proxies)
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/adapters.py", line 303, in get_connection
proxy_manager = self.proxy_manager_for(proxy)
File "/usr/share/python-wheels/requests-2.18.4-py2.py3-none-any.whl/requests/adapters.py", line 197, in proxy_manager_for
**proxy_kwargs)
File "/usr/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/poolmanager.py", line 440, in proxy_from_url
return ProxyManager(proxy_url=url, **kw)
File "/usr/share/python-wheels/urllib3-1.22-py2.py3-none-any.whl/urllib3/poolmanager.py", line 391, in __init__
raise ProxySchemeUnknown(proxy.scheme)
urllib3.exceptions.ProxySchemeUnknown: Not supported proxy scheme
My institute needs a proxy and I updated proxy at all places in my system using ProxyMan.
Is it due to proxy? Because I had fresh install of Linux. If because of proxy, where do i need to update proxy?

Answer 1

I had a similar issue and I solved it by adding my proxy settings at the end of /etc/bash.bashrc like this:
export http_proxy="http://<user>:<pass>#<proxy>:<port>
export https_proxy="https://<user>:<pass>#<proxy>:<port>
export ftp_proxy="ftp://<user>:<pass>#<proxy>:<port>
export socks_proxy="socks://<user>:<pass>#<proxy>:<port>

Answer 2

You can try to use easy_install + packagename instead of pip.