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

[Ross Mohn]

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.
>>>
>>>
>>
>>         -- 
>>         ubuntu-studio-users mailing list
>>         ubuntu-studio-users at lists.ubuntu.com
>>         <mailto:ubuntu-studio-users at lists.ubuntu.com>
>>         Modify settings or unsubscribe at:
>>         https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
>>
>>
>
>     -- 
>     ubuntu-studio-users mailing list
>     ubuntu-studio-users at lists.ubuntu.com
>     <mailto:ubuntu-studio-users at lists.ubuntu.com>
>     Modify settings or unsubscribe at:
>     https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-studio-users/attachments/20200511/cf32c599/attachment.html>