Broken pip

[Sivan Greenberg]

I used to get into that sort of lib chaos but then a few years ago I
stopped doing any python outside of virtualenv(s).

My 2c is use it always, use it more and then you’re free to use pip as the
only pkg manager for the project, with the occasional caveat that sometimes
you require non python libs installation through apt.

Sivan



On Wed, 29 Aug 2018 at 11:18 Thomas Jollans <tjol at tjol.eu> wrote:

> On 2018-08-28 20:10, Michael F. Stemper wrote:
> > I'm trying to upgrade my pip on Ubuntu 16.04. I appear to have
> > buggered things up pretty well. (Details follow) Any suggestions
> > on how to undo this and get everything back to proper operation?
> >
> > Based on the information that I found at:
> > <https://github.com/pypa/pip/issues/3776>, I did the following:
> >
> > user at host$ pip --version
> > pip 9.0.1 from /home/user/.local/lib/python2.7/site-packages (python 2.7)
>
> Apparently, you did it the "right" way before: installing anything
> system-wide with pip that has already been installed with distribution
> packages is fairly likely to break. Installing a newer pip in your home
> directory should normally work fine.
>
> Opinions differ, but personally I *never* use "sudo pip": use "pip
> install --user" instead. This installs into ~/.local rather than
> /usr/local.
>
> i.e.: try
>
>   python -m pip install --upgrade --user pip
>
> If that works, see if
>
>   python -m pip --version
> and
>   pip --version
>
> work and show the same thing. If the latter doesn't work or shows an old
> version, you may have to make sure ~/.local/bin/pip has priority over
> /usr/bin/pip (e.g. by putting ~/.local/bin/ near the front of your $PATH)
>
> If things break, you now know how to undo the damage thanks to Larry ;-)
>
> Also, PLEASE use Python 3. Still using Python 2 today is like still
> using Windows XP in early 2013.
>
> https://pythonclock.org/
>
> -- Thomas
>
>
> > user at host$ pip install --upgrade pip
> > Collecting pip
> >   Downloading
> >
> https://files.pythonhosted.org/packages/5f/25/e52d3f31441505a5f3af41213346e5b6c221c9e086a166f3703d2ddaf940/pip-18.0-py2.py3-none-any.whl
> > (1.3MB)
> >     100% |████████████████████████████████| 1.3MB 453kB/s
> > Installing collected packages: pip
> >   Found existing installation: pip 9.0.1
> >     Uninstalling pip-9.0.1:
> >       Successfully uninstalled pip-9.0.1
> >   Rolling back uninstall of pip
> > Exception:
> > Traceback (most recent call last):
> >  [snip error traceback]
> >     mkdir(name, mode)
> > OSError: [Errno 13] Permission denied:
> > '/usr/local/lib/python2.7/dist-packages/pip'
> > You are using pip version 9.0.1, however version 18.0 is available.
> > You should consider upgrading via the 'pip install --upgrade pip'
> command.
> > user at host$ pip --version
> > SError: [Errno 13] Permission denied:
> > '/usr/local/lib/python2.7/dist-packages/pip'
> > You are using pip version 9.0.1, however version 18.0 is available.
> > You should consider upgrading via the 'pip install --upgrade pip'
> command.
> > user at host$ pip --version
> > pip 9.0.1 from /home/user/.local/lib/python2.7/site-packages (python 2.7)
> > user at host$
> >
> > Sure enough, no change. Given the file permission error, I figured
> > that I needed root privileges, so I tried again:
> >
> > user at host$ sudo pip install --upgrade pip
> > [sudo] password for user:
> > The directory '/home/user/.cache/pip/http' or its parent directory is
> > not owned by the current user and the cache has been disabled. Please
> > check the permissions and owner of that directory. If executing pip with
> > sudo, you may want sudo's -H flag.
> > The directory '/home/user/.cache/pip' or its parent directory is not
> > owned by the current user and caching wheels has been disabled. check
> > the permissions and owner of that directory. If executing pip with sudo,
> > you may want sudo's -H flag.
> > Collecting pip
> >   Downloading
> >
> https://files.pythonhosted.org/packages/5f/25/e52d3f31441505a5f3af41213346e5b6c221c9e086a166f3703d2ddaf940/pip-18.0-py2.py3-none-any.whl
> > (1.3MB)
> >     100% |████████████████████████████████| 1.3MB 442kB/s
> > Installing collected packages: pip
> >   Found existing installation: pip 9.0.1
> >     Uninstalling pip-9.0.1:
> >       Successfully uninstalled pip-9.0.1
> > Successfully installed pip-18.0
> > user at host$ pip --version
> > Traceback (most recent call last):
> >   File "/usr/bin/pip", line 9, in <module>
> >     from pip import main
> > ImportError: cannot import name main
> > user at host$
> >
> > Well, even though it said "Successfully installed", it appears to
> > not have done so.
> >
> > Trying again with sudo's -H option:
> >
> > user at host$ sudo -H pip install --upgrade pip
> > Requirement already up-to-date: pip in
> > /usr/local/lib/python2.7/dist-packages (18.0)
> > user at host$ pip --version
> > Traceback (most recent call last):
> >   File "/usr/bin/pip", line 9, in <module>
> >     from pip import main
> > ImportError: cannot import name main
> > user at host$
> >
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>
-- 
Sivan Greenberg
Co founder & CTO
Vitakka Consulting