I don’t know how much up-to-date is pip in repositories from other distributions but version in Ubuntu 15.04 is from about year ago.
sudo apt-get install python-pip [email protected]:~$ pip -V pip 1.5.6 from /usr/lib/python2.7/dist-packages (python 2.7)
Because of this some commands don’t work correctly.
[email protected]:~$ pip freeze 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/freeze.py", line 74, in run req = pip.FrozenRequirement.from_dist(dist, dependency_links, find_tags=find_tags) File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 299, in from_dist assert len(specs) == 1 and specs == '==' AssertionError Storing debug log for failure in /home/eshlox/.pip/pip.log
Let’s remove pip.
sudo apt-get remove python-pip
I think that better option would be to install current version of pip from official site. When it is possible I always prefer to install software in my user home directory, that’s why –user flag appears below.
Let’s install pip.
wget https://bootstrap.pypa.io/get-pip.py python get-pip.py --user rm get-pip.py
[email protected]:~$ .local/bin/pip -V pip 7.1.0 from /home/eshlox/.local/lib/python2.7/site-packages (python 2.7)
Pip is now installed in user home directory, executable file exists in ~/.local/bin. We should add this to $PATH environment variable.
~/.bashrc file and add at the end:
Now we can just use pip in shell.
[email protected]:~$ pip -V pip 7.1.0 from /home/eshlox/.local/lib/python2.7/site-packages (python 2.7)
We can simply upgrade pip when newer version will be available.
pip install pip --upgrade
In the same way we can install virtualenv and virtualenvwrapper.
pip install virtualenv virtualenvwrapper --user
Because we added ~/.local/bin to $PATH, virtualenv and virtualenwrapper are available from command line.
[email protected]:~$ mkvirtualenv --version 13.1.0
As described here, we should add shell startup file with our path to virtualenwrapper (.bashrc). It can look like this:
export WORKON_HOME=$HOME/projects export PROJECT_HOME=$HOME/projects source $HOME/.local/bin/virtualenvwrapper.sh
Done. Everything works as it should, and we are not dependent on versions from system repository.