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

[BabsKy]

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> 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> 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> 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> 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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