[ubuntu-studio-users] Next Gimp issue - no python

[Ross Mohn]

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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>>
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