Unable to install any package using Pip

Question

Whenever I run the command pip install Django I get the following error trace which means there is some version conflict. I tried uninstalling and then installing the same package, but it's throwing up the same error.

Downloading/unpacking bcrypt (from Django)
  Downloading bcrypt-2.0.0.tar.gz
  Running setup.py (path:/tmp/pip_build_root/bcrypt/setup.py) egg_info for package bcrypt
    Traceback (most recent call last):
      File "<string>", line 17, in <module>
      File "/tmp/pip_build_root/bcrypt/setup.py", line 226, in <module>
        **keywords_with_side_effects(sys.argv)
      File "/usr/lib/python2.7/distutils/core.py", line 111, in setup
        _setup_distribution = dist = klass(attrs)
      File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 225, in __init__
        _Distribution.__init__(self,attrs)
      File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__
        self.finalize_options()
      File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 257, in finalize_options
        ep.require(installer=self.fetch_build_egg)
      File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 2029, in require
        working_set.resolve(self.dist.requires(self.extras),env,installer))
      File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 592, in resolve
        raise VersionConflict(dist,req) # XXX put more info here
    pkg_resources.VersionConflict: (certifi 2016.2.28 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('certifi==2015.11.20'))
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 17, in <module>

  File "/tmp/pip_build_root/bcrypt/setup.py", line 226, in <module>

    **keywords_with_side_effects(sys.argv)

  File "/usr/lib/python2.7/distutils/core.py", line 111, in setup

    _setup_distribution = dist = klass(attrs)

  File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 225, in __init__

    _Distribution.__init__(self,attrs)

  File "/usr/lib/python2.7/distutils/dist.py", line 287, in __init__

    self.finalize_options()

  File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/setuptools/dist.py", line 257, in finalize_options

    ep.require(installer=self.fetch_build_egg)

  File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 2029, in require

    working_set.resolve(self.dist.requires(self.extras),env,installer))

  File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 592, in resolve

    raise VersionConflict(dist,req) # XXX put more info here

pkg_resources.VersionConflict: (certifi 2016.2.28 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('certifi==2015.11.20'))

----------------------------------------
Cleaning up...

I am using Python 2.7. Anybody knows what is the issue?

I did that. Now, I am getting a different error: File "/usr/local/lib/python2.7/dist-packages/distribute-0.6.28-py2.7.egg/pkg_resources.py", line 1290, in _setup_prefix while path!=old: RuntimeError: maximum recursion depth exceeded in cmp ---------------------------------------- Cleaning up... — Abhijay, Mar 27 '16 at 09:07
"any package" seems broad considering you've only shown the error message of one `bcrypt` package — OneCricketeer, Mar 27 '16 at 09:08
@cricket_007 But the error is caused by `distribute` which is part of `setuptools`, so it might be true that every installation gives the same error. — Selcuk, Mar 27 '16 at 09:09
@Selcuk I am getting the same error as the one in my original question. VersionConflict: (certifi 2016.2.28 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('certifi==2015.11.20')) — Abhijay, Mar 27 '16 at 09:12
check this answer http://stackoverflow.com/questions/25981703/pip-install-fails-with-connection-error-ssl-certificate-verify-failed-certi — Sayed Zainul Abideen, Mar 27 '16 at 09:23
@SayedZainulAbideen I setup a virtualenv and got it to work. However, the issue has still not been resolved — Abhijay, Mar 27 '16 at 18:59
@Abhijay what about manually downloading and installing certifi — Sayed Zainul Abideen, Mar 27 '16 at 19:14

score 2 · Answer 1 · answered Mar 27 '16 at 10:34

It seems like all the problem is because of certifi version conflict

so try downloading the source from here https://pypi.python.org/pypi/certifi

and install from source

Extract it go into the folder and run this command

sudo python setup.py  install

and it should work

peace

score 0 · Answer 2 · edited Apr 25 '17 at 19:28

I met such a situation when I had already used system package manager like aptitude or pacman to install that very package, or dependency package (they, pip and system package manager, do not know each other, while they install package at the same folder, some site-package thing, so it's easy to get a file already exist like problem)

You need to see which is conflict, open your python console, try to import it, and see where is it with module_name.file, remove it(or the folder) manually (please backup before problem really solved).

Or just use pip and system package manager to verify which has been already installed

Unable to install any package using Pip

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