Upgrading python3.4 to python3.6 on ubuntu breaks pip

Question

I\'m attempting to install python3.6 on my machine after I currently have python3.4. However, after installation trying to run pip under python3.6 gives me the

Answer 1

Well, it seems I had a similar problem, but for installing distribute as a dependency by pip.

I managed to install the dependency in this way (under env):

 easy_install distribute==0.7.3

A piece of error that I ran into:

File "/tmp/pip-build-lvtkw8zs/distribute/pkg_resources.py", line 1518, in <module>
    register_loader_type(importlib_bootstrap.SourceFileLoader, DefaultProvider)
AttributeError: module 'importlib._bootstrap' has no attribute 'SourceFileLoader'
 ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-lvtkw8zs/distribute/

Answer 2

I was having the same issue. It seems I had 2 versions of pkg_resources on my system.

/usr/local/lib/python3.6/site-packages/pkg_resources.py

/usr/lib/python3.6/site-packages/pkg_resources/__init__.py

Moving the old version so my system could find the newer version fixed it for me.

mv /usr/local/lib/python3.6/site-packages/pkg_resources.py /usr/local/lib/python3.6/site-packages/pkg_resources.py.back

Answer 3

Had the same problem. Installing python from the source helped.

# Remove existing python 3.6 if installed with apt
$ sudo apt-get autoremove python3.6

# Get the source
$ wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz
$ tar xvf Python-3.6.1.tar.xz
$ cd Python-3.6.1

# Configure and install
$ sudo ./configure
$ sudo make altinstall

# Success!
$ pip3.6 -V
pip 9.0.1 from /usr/local/lib/python3.6/site-packages (python 3.6)

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Edit: I since discovered pyenv. Makes installing and managing different python versions a lot easier. Give it a try!

Answer 4

I replaced Python 3.4 with 3.6 on my Ubuntu 14.04 servers and I had the same problem. In my case the cause seemed to be an ancient system pip:

$ pip --version
pip 1.5.4 from /usr/lib/python2.7/dist-packages (python 2.7)

I have never installed python3-pip. Instead I solved the error as follows:

$ sudo pip install --upgrade pip
$ sudo pip install --upgrade virtualenv

Answer 5

Just download the file get-pip.py here and use this command:

sudo python3 get-pip.py

Answer 6

I managed to solve it without installing anything from sources. Here's what I did:

1. First, install pip for Python3.x (for some weird reason I didn't have it...)

   $ sudo apt-get install python3-pip
   

   It is an old version...

   $ pip3 --version
   pip 1.5.4 from /usr/lib/python3/dist-packages (python 3.4)
   

2. ... so upgrade it to the latest

   $ sudo pip3 install --upgrade pip
   

   Now it is much better

   $ sudo pip3 --version
   pip 9.0.1 from /usr/local/lib/python3.4/dist-packages (python 3.4)
   

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3. Then upgrade virtualenvvwrapper

   $ sudo pip3 install --upgrade virtualenvwrapper
   # ...
   Successfully installed pbr-3.0.1 six-1.10.0 stevedore-1.22.0 virtualenv-15.1.0 virtualenv-clone-0.2.6 virtualenvwrapper-4.7.2
   

4. Now creating a new virtualenv works:

   $ mkvirtualenv -p `which python3.6` <VIRTUALENV_NAME>
   

   pip also works:

   $ pip install django
   # ...
   Successfully installed django-1.11.2 pytz-2017.2
   
   $ pip freeze
   Django==1.11.2
   pytz==2017.2
   

Note: Now I realize it's a bit more than what you asked for, but (without knowing where exactly you failed) I guess you should be OK after step 2.