mjhjmtu

I recently updated my Debian 9.3 and after this Python3 can't install packages any more (nor access the internet through an API).

I assume that urllib3 was updated, and does not work well with Python3. I don't remember though what was updated (with apt upgrade).

pip3 install --user <package> (no matter what package) fail with:

Exception:
Traceback (most recent call last):
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connection.py", line 138, in _new_conn
 (self.host, self.port), self.timeout, **extra_kw)
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/util/connection.py", line 75, in create_connection
 for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
 File "/usr/lib/python3.5/socket.py", line 733, in getaddrinfo
 for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 594, in urlopen
 chunked=chunked)
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 350, in _make_request
 self._validate_conn(conn)
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 837, in _validate_conn
 conn.connect()
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connection.py", line 281, in connect
 conn = self._new_conn()
 File "/usr/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connection.py", line 147, in _new_conn
 self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7ff342e8f908>: Failed to establish a new connection: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

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-2.12.4-py2.py3-none-any.whl/requests/sessions.py", line 501, 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-2.12.4-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'

Apt log:

Start-Date: 2018-03-04 17:32:42
Commandline: apt upgrade
Upgrade: linux-libc-dev:amd64 (4.9.82-1+deb9u2, 4.9.82-1+deb9u3), libwavpack1:amd64 (5.0.0-2, 5.0.0-2+deb9u1), libwavpack1:i386 (5.0.0-2, 5.0.0-2+deb9u1), libvpx4:amd64 (1.6.1-3, 1.6.1-3+deb9u1), libvpx4:i386 (1.6.1-3, 1.6.1-3+deb9u1), libxenstore3.0:amd64 (4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.1, 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5), linux-kbuild-4.9:amd64 (4.9.82-1+deb9u2, 4.9.82-1+deb9u3), linux-image-4.9.0-6-amd64:amd64 (4.9.82-1+deb9u2, 4.9.82-1+deb9u3), libxen-4.8:amd64 (4.8.3+comet2+shim4.10.0+comet3-1+deb9u4.1, 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
End-Date: 2018-03-04 17:36:55