Gfilui

The following happens whenever I try to install matplotlib

vijay@vijay-Inspiron-1545:~$ python -mpip install matplotlib
Collecting matplotlib
Exception:
Traceback (most recent call last):
 File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
 status = self.run(options, args)
 File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 353, in run
 wb.build(autobuilding=True)
 File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 749, in build
 self.requirement_set.prepare_files(self.finder)
 File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 380, in prepare_files
 ignore_dependencies=self.ignore_dependencies))
 File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 554, in _prepare_file
 require_hashes
 File "/usr/lib/python2.7/dist-packages/pip/req/req_install.py", line 278, in populate_link
 self.link = finder.find_requirement(self, upgrade)
 File "/usr/lib/python2.7/dist-packages/pip/index.py", line 465, in find_requirement
 all_candidates = self.find_all_candidates(req.name)
 File "/usr/lib/python2.7/dist-packages/pip/index.py", line 423, in find_all_candidates
 for page in self._get_pages(url_locations, project_name):
 File "/usr/lib/python2.7/dist-packages/pip/index.py", line 568, in _get_pages
 page = self._get_page(location)
 File "/usr/lib/python2.7/dist-packages/pip/index.py", line 683, in _get_page
 return HTMLPage.get_page(link, session=self.session)
 File "/usr/lib/python2.7/dist-packages/pip/index.py", line 792, in get_page
 "Cache-Control": "max-age=600",
 File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 501, in get
 return self.request('GET', url, **kwargs)
 File "/usr/lib/python2.7/dist-packages/pip/download.py", line 386, in request
 return super(PipSession, self).request(method, url, *args, **kwargs)
 File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 488, in request
 resp = self.send(prep, **send_kwargs)
 File "/usr/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 609, 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-2.12.4-py2.py3-none-any.whl/requests/adapters.py", line 423, in send
 timeout=timeout
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 643, in urlopen
 _stacktrace=sys.exc_info()[2])
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/util/retry.py", line 315, in increment
 total -= 1
TypeError: unsupported operand type(s) for -=: 'Retry' and 'int'

matplotlib is packaged.

You can install it with

sudo apt-get install python-matplotlib python3-matplotlib