Python 2, pip and TLS

[Mte90]

I have a problem with running commands with pip.

Code Auswählen Erweitern

root@siduction:/home/mte90# pip install --upgrade pyopenssl                 
Traceback (most recent call last):
  File "/usr/local/bin/pip", line 10, in <module>
    from pip import main
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 21, in <module>
    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning
  File "/usr/lib/python2.7/dist-packages/pip/_vendor/__init__.py", line 68, in <module>
    vendored("html5lib")
  File "/usr/lib/python2.7/dist-packages/pip/_vendor/__init__.py", line 36, in vendored
    __import__(modulename, globals(), locals(), level=0)
  File "/usr/lib/python2.7/dist-packages/html5lib/__init__.py", line 16, in <module>
    from .html5parser import HTMLParser, parse, parseFragment
  File "/usr/lib/python2.7/dist-packages/html5lib/html5parser.py", line 11, in <module>
    from . import _inputstream
  File "/usr/lib/python2.7/dist-packages/html5lib/_inputstream.py", line 4, in <module>
    from six.moves import http_client, urllib
  File "/usr/lib/python2.7/dist-packages/six.py", line 203, in load_module
    mod = mod._resolve()
  File "/usr/lib/python2.7/dist-packages/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/usr/lib/python2.7/dist-packages/six.py", line 82, in _import_module
    __import__(name)
  File "/usr/lib/python2.7/httplib.py", line 1230, in <module>
    import ssl
  File "/usr/lib/python2.7/ssl.py", line 133, in <module>
    PROTOCOL_SSLv23 = PROTOCOL_TLS
NameError: name 'PROTOCOL_TLS' is not defined[code]
I looked on internet and seems the problem based on openssl that is not updated in the system, the debian package as un updated on november 2016 https://packages.debian.org/sid/python-openssl and everything is updated in my machine.So actually for me is impossible to use pip on python 2.x.Anyone has suggestions or a workround for it?

[melmarker]

and where is the problem? In other words - why do you expect pip to work outside a virtual environment?

[Mte90]

I am trying to use pip packages on my local machine but everytime I try to install a package I gto this error.I always used pip in my local machine for my scripts and never used ina virtual machine, so I am not sure of this error is based on a missing update on my machine of something.

[melmarker]

pythons virtual environment isn't a virtual machine, only an environment that is maintained via pip and have all needed things in the right version in it. One will never win against apt in that regard - so pip in a normal system environment can and will break without warning sometimes - only one thing is sure, it will break somewhen.


http://python-guide-pt-br.readthedocs.io/en/latest/dev/virtualenvs/

[Mte90]

Ok but in any case this is a bug that I don't find a solution.I use it only to download package that not are available on debian like for marionette.

[melmarker]

the virtenv is the solution - create a virtenv, activate the environment, install your things with pip
next app - next environment

Code Auswählen Erweitern


apt install python-virtenv
virtualenv foo
source ~/foo/bin/activate
pip install bar
deactivate


[Mte90]

Uhm this can be very uncomfortable especially with application desktop done with qt as example.I can check if the errore doesn't happen on virtualenv

[Mte90]

I got the same error also on vend so is not a problem where to use but a problem of python:

Code Auswählen Erweitern

mte90:/tmp  $  virtualenv foo                                                                                                                                                   
Running virtualenv with interpreter /usr/local/bin/python2                                                                                                                                                         
Using real prefix '/usr'                                                                                                                                                                                           
New python executable in /tmp/foo/bin/python2                                                                                                                                                                       
Also creating executable in /tmp/foo/bin/python                                                                                                                                                                     
Installing setuptools, pkg_resources, pip, wheel...                                                                                                                                                                 
  Complete output from command /tmp/foo/bin/python2 - setuptools pkg_resources pip wheel:
  Traceback (most recent call last):
  File "<stdin>", line 7, in <module>
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 21, in <module>
    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning
  File "/usr/lib/python2.7/dist-packages/pip/_vendor/__init__.py", line 64, in <module>
    vendored("cachecontrol")
  File "/usr/lib/python2.7/dist-packages/pip/_vendor/__init__.py", line 36, in vendored
    __import__(modulename, globals(), locals(), level=0)
  File "/tmp/foo/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/__init__.py", line 9, in <module>
  File "/tmp/foo/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/wrapper.py", line 1, in <module>
  File "/tmp/foo/share/python-wheels/CacheControl-0.11.7-py2.py3-none-any.whl/cachecontrol/adapter.py", line 4, in <module>
  File "/tmp/foo/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/__init__.py", line 52, in <module>
  File "/tmp/foo/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/packages/__init__.py", line 53, in <module>
  File "/tmp/foo/share/python-wheels/requests-2.12.4-py2.py3-none-any.whl/requests/packages/__init__.py", line 35, in vendored
  File "/tmp/foo/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/__init__.py", line 8, in <module>
  File "/tmp/foo/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 11, in <module>
  File "/tmp/foo/share/python-wheels/urllib3-1.19.1-py2.py3-none-any.whl/urllib3/exceptions.py", line 2, in <module>
  File "/tmp/foo/share/python-wheels/six-1.10.0-py2.py3-none-any.whl/six.py", line 203, in load_module
    mod = mod._resolve()
  File "/tmp/foo/share/python-wheels/six-1.10.0-py2.py3-none-any.whl/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/tmp/foo/share/python-wheels/six-1.10.0-py2.py3-none-any.whl/six.py", line 82, in _import_module
    __import__(name)
  File "/usr/lib/python2.7/httplib.py", line 1230, in <module>
    import ssl
  File "/usr/lib/python2.7/ssl.py", line 133, in <module>
    PROTOCOL_SSLv23 = PROTOCOL_TLS
NameError: name 'PROTOCOL_TLS' is not defined
----------------------------------------
...Installing setuptools, pkg_resources, pip, wheel...done.
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2375, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 724, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 992, in create_environment
    download=download,
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 922, in install_wheel
    call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 817, in call_subprocess
    % (cmd_desc, proc.returncode))
OSError: Command /tmp/foo/bin/python2 - setuptools pkg_resources pip wheel failed with error code 1


[melmarker]

hit me for it - but it seems you want a python3 environment

[Mte90]

Uhm indeed seems a mix between 2 and 3 but on sid I used https://packages.debian.org/it/sid/python-virtualenvSo I am trying to use on python 2...