Can someone help me with my python venv

[stumueller]

So im running linux mint 22 - based on ubuntu 24.04. It ships with python 3.12.3 which I dont think can be removed. So to get A1111 working I installed python 3.10 from the deadsnakes ppa. I then changed the webui.sh so that python_cmd would point to python3.10 and as of version 1.9.4 of a1111 it was all working.

However upgrading to 1.10.1 it seemed to revert back to trying to use python 3.12 even though the python_cmd was still set to python3.10.

Looking in webui.sh it seems to be the following lines that are causing my issue:
if [[ -f "${venv_dir}"/bin/activate ]]
then
source "${venv_dir}"/bin/activate
# ensure use of python from venv
python_cmd="${venv_dir}"/bin/python
else

removing python_cmd="${venv_dir}"/bin/python from that file and A1111 works fine and shows me the new version.

looking in my venv/bin directory in stable-diffusion shows me this:

So it appears that hte venv used by stable diffusion is pointing to python3 (python 3.12) BUT stablediffusion is working and showing that I am using python 3.10.

What is going on??

[rachelf99]

I guess you can create a python venv/conda env to make sure python version==3.10.6. recommand editing webui-user.sh, not webui.sh.

[w-e-w]

is it possible because the original venv was wrongly created with 3.12?

my guess is that maybe you originally run it the first time and it created a 3.12 venv
you face compatibility issues and you modified python_cmd to 3.10
but you didn't delete the venv that was created by 3.12

• and since Ensure use of python from venv on Mac and Linux #16116 we make sure it's actually using the python in venv
  witch was created using 3.12 it broke

I would try deleteing the current venv make sure
python_cmd in webui-user.sh is set to 3.10

stable-diffusion-webui/webui-user.sh

Line 16 in 82a973c

#python_cmd="python3"

and relaunch

like rachelf99 mentioned you should not edit webui.sh, webui-user.sh
webui.sh is code that we will change which means you edits may get lost or worse break stuff
put configurations inside webui-user.sh

---

@viking1304 this seems related to your PR

• Ensure use of python from venv on Mac and Linux #16116

[viking1304]

@stumueller your venv was created with the wrong python version (3.12) since you most likely ran webui before installing python 3.10 and adding it to webui-user.sh

when you changed python_cmd in webui-user.sh to point to 3.10, you probably put the whole path to it, something like /usr/bin/python3.10. using the full path in any version before 1.10 would actually use python 3.10 from your system and not from venv

1.10 includes my patches #16116 and #16092 which ensure that correct version of python will be used and that it will actually use python from venv

removing python_cmd="${venv_dir}"/bin/python do the opposite of the desired behavior, so if that helped, I am 99.999% sure you were using the full path in webui-user.sh

this is also the reason why everything worked in 1.9.4 and stopped working with 1.10

just remove venv and rerun ./webui.sh
it will create a new venv for you, which will use 3.10 (as it should)
it will also use python and libraries from venv, and not from the system

@w-e-w since 1.10 setting python_cmd="python3.10" is not needed anymore, but it will not make a conflict if it is there. a1111 will use 3.10 with that change and without it. if the user specifies python_cmd="python3.11" for example, then it will use 3.11
if the desired version is not found it will fall-back to pytoh3

@stumueller and @w-e-w all of those should work the same

#python_cmd="python3" 
python_cmd="python3.10" 
python_cmd="/usr/bin/python3.10" 

[stumueller]

thank you guys. I've done a bit of research into python venv environments so understand a bit more about them, and my problem was indeed caused by running a1111 before installing python3.10 so my venv was using python3.12.

I'm pretty sure I didn't use the full path to python3.10 but either way all of the libraries and packages where under ~/.local/lib/python3.10

I took your advise and removed the venv and all the libraries under ~/.local
I then created a new python3.10 venv manually under stable-diffusion folder and restored my webui.sh file from source, it then redownloaded all the libraries and packages to the venv folder
its now all working fine.

Thanks for explaining what I did wrong

[viking1304]

Out of curiosity, can you share what you had (or still have) in webui-user.sh?

[stumueller]

I didn't make any changes to webui-user.sh - I changed webui.sh as I didn't realize the $python_cmd variable could be set in webui-user.sh
in 1.9.4 I changed this:

if [[ -z "${python_cmd}" ]]
then
    python_cmd="python3"
fi

to this:

if [[ -z "${python_cmd}" ]]
then
    python_cmd="python3.10"
fi

[w-e-w]

stable-diffusion-webui/webui.sh

Lines 2 to 5 in 82a973c

	#################################################
	# Please do not make any changes to this file, #
	# change the variables in webui-user.sh instead #
	#################################################

shaking my head

[viking1304]

😱

[stumueller]

yeah - i didn't read that bit, was late at night, so I just found the section that would fix it for me then 😊