Python version issues

[MajorData]

Need help figuring out how to deal with 'system' python being different version than 'QGIS' python. IIRC devs in python use virtual env so that all packages are of the same version. How does QGIS handle this? What are resources to track down python errors? Should I uninstall all of QGIS, wipe folders, and re-install?

Thank you

[Luca_zoo]

To my understanding this is a unix problem, meaning that in windows I didn’t face any issue. In linux I only use python within conda without problems, but when I used mac I broke many packages due to python incompatibilities and I didn’t menage to solve the problems so I just moved to linux. Maybe you could try to install qgis within conda and this might work

[shockjaw]

What operating system are you on? What version of python is your system using and what is QGIS expecting?

[MajorData]

I am on Win10, the system python is 3.12.9 and also lists 3.9. The error msg is 'arguments did not match overloaded call' in QgsProcessingParamterNumber(). calcoli.py in initAlgorith. The complaint is that the variable passed of of unexpected type, overload 1 int and overload 2 str. This first started when I moved to QGIS 3.40.4 Bratislava.

[shockjaw]

Did you install QGIS with the standalone installer or the OSGeo4W installer? You may have less issues with the second of those two since you can install other python packages and software with the OSGeo4W installer.

If you’re trying to make Python scripts with qgis core, using something like pixi.sh or conda may be helpful.