Patch pyopenssl for sslv3 issue

Question

I got a problem on a Debian 8 system with python 2.7.9-2 amd64:

    marius@pydev:/usr/lib/python2.7/dist-packages/urllib3/contrib$ pip search doo
Traceback (most recent call last):
  File "/usr/bin/pip", line 9, in <module>
    load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 356, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2476, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2190, in load
    ['__name__'])
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 74, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/usr/lib/python2.7/dist-packages/pip/vcs/mercurial.py", line 9, in <module>
    from pip.download import path_to_url
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 22, in <module>
    import requests, six
  File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 53, in <module>
    from .packages.urllib3.contrib import pyopenssl
  File "/usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 73, in <module>
    ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,
**AttributeError: 'module' object has no attribute 'PROTOCOL_SSLv3'**

I checked into the lib and tried to patch /usr/local/lib/python2.7/dist-packages/requests/packages/urllib3/contrib/pyopenssl.py

    from .. import connection
from .. import util

__all__ = ['inject_into_urllib3', 'extract_from_urllib3']

# SNI only *really* works if we can read the subjectAltName of certificates.
HAS_SNI = SUBJ_ALT_NAME_SUPPORT

# Map from urllib3 to PyOpenSSL compatible parameter-values.
_openssl_versions = {
    ssl.PROTOCOL_SSLv23: OpenSSL.SSL.SSLv23_METHOD,
    **ssl.PROTOCOL_SSLv3: OpenSSL.SSL.SSLv3_METHOD,**
    ssl.PROTOCOL_TLSv1: OpenSSL.SSL.TLSv1_METHOD,
}
_openssl_verify = {
    ssl.CERT_NONE: OpenSSL.SSL.VERIFY_NONE,
    ssl.CERT_OPTIONAL: OpenSSL.SSL.VERIFY_PEER,
    ssl.CERT_REQUIRED: OpenSSL.SSL.VERIFY_PEER
                       + OpenSSL.SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
}

Could someone enlighten me how I can fix this? It would be super awesome if someone had a clue. I googled the issue and only found incomplete patches and it's messy. Probably a case for the bug tracker once this is fixed, too. I have this issue for all Python packages.

Answer 1

Another way to fix the problem is to use

sudo easy_install --upgrade pip

and use pip normally afterwards