python pip install failures

Question

i am trying to install a library pynput using sudo pip install pynput

but i am getting this error log. This has been happening with any other python package. everything used to work fine suddenly these errors are appearing i tried to copy error log from

~/.pip/pip.log

and this is what i have:

 Using version 1.4 (newest of versions: 1.4, 1.3.10, 1.3.9, 1.3.8.1, 1.3.7, 1.3.6, 1.3.5, 1.3.4, 1.3.3, 1.3.2, 1.3.1, 1.3, 1.2, 1.1.7, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0, 0.6, 0.5.1, 0.5, 0.4, 0.3, 0.2)
Cleaning up...
  Removing temporary dir /tmp/pip_build_root...
Exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1198, in prepare_files
    do_download,
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1376, in unpack_url
    self.session,
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 546, in unpack_http_url
    resp = session.get(target_url, stream=True)
  File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 467, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 237, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 455, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/sessions.py", line 558, in send
    r = adapter.send(request, **kwargs)
  File "/usr/share/python-wheels/requests-2.2.1-py2.py3-none-any.whl/requests/adapters.py", line 330, in send
    timeout=timeout
  File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 562, in urlopen
    body=body, headers=headers)
  File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 387, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python2.7/httplib.py", line 1017, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.7/httplib.py", line 1051, in _send_request
    self.endheaders(body)
  File "/usr/lib/python2.7/httplib.py", line 1013, in endheaders
    self._send_output(message_body)
  File "/usr/lib/python2.7/httplib.py", line 864, in _send_output
    self.send(msg)
  File "/usr/lib/python2.7/httplib.py", line 826, in send
    self.connect()
  File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 145, in connect
    match_hostname(self.sock.getpeercert(),
  File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/contrib/pyopenssl.py", line 313, in getpeercert
    for value in get_subj_alt_name(x509)
  File "/usr/share/python-wheels/urllib3-1.7.1-py2.py3-none-any.whl/urllib3/contrib/pyopenssl.py", line 94, in get_subj_alt_name
    asn1Spec=general_names)
  File "/usr/local/lib/python2.7/dist-packages/pyasn1/codec/ber/decoder.py", line 825, in __call__
    stGetValueDecoder, self, substrateFun
  File "/usr/local/lib/python2.7/dist-packages/pyasn1/codec/ber/decoder.py", line 391, in valueDecoder
    r.verifySizeSpec()
  File "/usr/local/lib/python2.7/dist-packages/pyasn1/type/base.py", line 252, in verifySizeSpec
    def verifySizeSpec(self): self._sizeSpec(self)
  File "/usr/local/lib/python2.7/dist-packages/pyasn1/type/constraint.py", line 32, in __call__
    '%s failed at: \"%s\"' % (self, sys.exc_info()[1])
ValueConstraintError: ConstraintsIntersection(ConstraintsIntersection(), ValueSizeConstraint(1, 64)) failed at: "ValueSizeConstraint(1, 64) failed at: "SubjectAltName().setComponents(GeneralName(componentType=NamedTypes(NamedType('otherName', AnotherName(componentType=NamedTypes(NamedType('type-id', ObjectIdentifier('<no value>')), NamedType('value', ...........

Answer 1

A similar issue exists here.

The problem seems to be that the PyPI certificate now has more than 64 SAN names on it, breaking the hardcoded maximum in older versions of requests.

Make sure you have recent versions of both the requests and urllib3 modules.

Answer 2

You need to update pip. Just enter this command

curl  https://bootstrap.pypa.io/get-pip.py | sudo python

After update bash -l

That's it.