[ubuntu-studio-users] Next Gimp issue - no python
BabsKy
babs.keeley at gmail.com
Thu May 14 16:22:50 UTC 2020
The release notes suggest (on newly installed systems) installing
python-is-python3 package for a /usr/bin/python pointing to python3 instead.
It still doesn't fix the problem, I think it has to be Gimp specific
python.
I'm using the Appimage, it is integrated so it still appears on the
menu/app list and I can still add assets.
On Wed, 13 May 2020 at 18:06, Ross Gammon <rosco at ubuntustudio.org> wrote:
> In case it helps. The Focal (20.04) Release Notes have some information
> about the "Python 3 by default" change. How to handle it depends on
> whether it is a fresh install, or an upgrade.
> https://wiki.ubuntu.com/FocalFossa/ReleaseNotes
>
> On 11/05/2020 23:52, BabsKy wrote:
> > I just checked the US 20.04 beta (run from disc) and that has loads of
> > '/usr/bin/env: ‘python’: No such file or directory' too, and no python.
> > Did the update alternatives, now getting loads of "from gimpfu import
> > * ModuleNotFoundError: No module named 'gimpfu'" errors.
> > These errors are for the .py scripts now 'built in' to Gimp.
> > There's more people with the same issue online now than there was
> > yesterday but the only solutions are either get the appimage or use Gimp
> > on Windows 😟 I really don't want to do either of those but if I get too
> > stuck I'll probably go with the appimage option and hold out for a
> > better solution.
> > Thanks for all your help Ross 👍
> >
> >
> > On Mon, 11 May 2020 at 21:25, Ross Mohn <rpmohn at waxandwane.org
> > <mailto:rpmohn at waxandwane.org>> wrote:
> >
> > The update-alternatives command should create the
> > /etc/alternatives/python link for you just fine.
> >
> > On 5/11/20 3:56 PM, BabsKy wrote:
> >> Sorry, had to dogsit for a bit.
> >> env is in usr/bin, don't know how I missed it before.
> >> There are a few pythons in usr/bin (2 (link to py2.7), 2.7 (shared
> >> lib), 3 (link to py3.8), 3.8 (exe), and a few more py 3) but none
> >> in alternatives.
> >> Setting usr/bin/python to point to /etc/alternatives/python won't
> >> work if it's not there.
> >>
> >> Do I have to set the python path environment variable? I'm only
> >> guessing but is 'env' a list of environment variables? All I know
> >> is that it's a library.
> >>
> >>
> >>
> >> On Mon, 11 May 2020 at 19:26, Ross Mohn <rpmohn at waxandwane.org
> >> <mailto:rpmohn at waxandwane.org>> wrote:
> >>
> >> Take a look at what python stuff is in /usr/bin right now.
> >> There should be several symbolic links.
> >>
> >> * ls -l /usr/bin/python* /etc/alternatives/python*
> >>
> >> My guess is that /usr/bin/python is either missing altogether
> >> or is pointing to some version of python2 that has been
> >> removed. If you run this command it will set /usr/bin/python
> >> to point to /etc/alternatives/python, which in turn will point
> >> to /usr/bin/python3.
> >>
> >> * sudo update-alternatives --install /usr/bin/python
> >> python /usr/bin/python3 1
> >> * python --version
> >> should now return 'Python 3.8.2'
> >>
> >> That should get the 'python' command pointing to a valid
> >> python installation again. Your next issue might be that some
> >> older python scripts will have to be updated to be compatible
> >> with python3, but fixing those will be a one-time thing and
> >> will get you positioned well for the long term.
> >>
> >> -Ross
> >>
> >>
> >> On 5/11/20 1:58 PM, BabsKy wrote:
> >>> All 'python' commands (tried a few variations) returned
> >>> "command 'python' not found",
> >>> 'python3 --version' returned 'Python 3.8.2'.
> >>> I think it's Gimp python as this has been an issue before, as
> >>> I mentioned, but I don't know what specifically to install,
> >>> it doesn't seem to be 'Gimp python' as it was before.
> >>> I've tinkered with thonny for writing python scripts for Gimp
> >>> and it that it was pygimp but I'm stumped. I don't want to
> >>> randomly install stuff in case I make it worse.
> >>>
> >>> On Mon, 11 May 2020 at 17:58, Ross Mohn
> >>> <rpmohn at waxandwane.org <mailto:rpmohn at waxandwane.org>> wrote:
> >>>
> >>> Here are the steps I used:
> >>>
> >>> 1. Check current system python version is 2.x
> >>> sudo python --version
> >>> 2. Execute this command to switch to python3
> >>> sudo update-alternatives --install
> >>> /usr/bin/python python /usr/bin/python3 1
> >>> 3. Verify system python version is now 3.x
> >>> sudo python --version
> >>>
> >>> based on steps I found in this post:
> >>>
> >>>
> https://unix.stackexchange.com/questions/410579/change-the-python3-default-version-in-ubuntu
> >>>
> >>> -Ross
> >>>
> >>>
> >>> On 5/11/20 12:10 PM, BabsKy wrote:
> >>>> I'm surprised that python (for Gimp) isn't installed by
> >>>> default on Linux, that's what's caused this issue before.
> >>>> I'll try anything to get it working, python plays a
> >>>> large part of my Gimp workflow.
> >>>> Sorry to ask but how would I manually set python3 as the
> >>>> default?
> >>>>
> >>>> On Mon, 11 May 2020 at 16:54, Ross Mohn
> >>>> <rpmohn at waxandwane.org <mailto:rpmohn at waxandwane.org>>
> >>>> wrote:
> >>>>
> >>>> Can you try 'python3'? On a side note, I was
> >>>> surprised that python3 was note the default in the
> >>>> upgrade. I had manually set python3 as the default
> >>>> in my 19.10 and that was switched back to python 2.x
> >>>> when I upgraded.
> >>>>
> >>>> -Ross
> >>>>
> >>>>
> >>>> On 5/11/20 7:38 AM, BabsKy wrote:
> >>>>> So I did a clean install and Gimp now loads and
> >>>>> works mostly OK. The issue now is it can't find
> >>>>> python.
> >>>>> I know this has been an issue with Gimp on Linux
> >>>>> previously and it could be solved by 'sudo apt
> >>>>> install gimp-python', but this doesn't work.
> >>>>>
> >>>>> Output from terminal '/usr/bin/env: ‘python’: No
> >>>>> such file or directory'
> >>>>> I can see there's no env in bin.
> >>>>> Does anyone know how to fix this please?
> >>>>> I have searched online but the solutions aren't
> >>>>> relevant to the current Gimp version/Linux.
> >>>>>
> >>>>>
> >>>>
> >>>> --
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