[Qgis-user] Running QGis on a machine with Python 3.11 and PyCharm ?

[Toussaint OTTAVI]

Hi,

I'm new to QGis. I'm trying to install latest version (3.28.7 LTR) on my 
machine. It does not run. The startup window shows during a few seconds, 
then, nothing.

I tried several older versions. None of them wants to start. The 
exception is 3.14, which starts, and works perfectly.

On my machine, I already have a Python 3 installed (currently, 3.11.1), 
on absolute path C:\Python, PYTHONPATH system variable pointing to it, 
and system path, too. I also have PyCharm installed. I think this may be 
the cause of my problem. I noticed the included interpreter (C:\Program 
Files\QGIS 3.28.7\bin\python.exe) does not start at all, with Python error :
    File "C:\Python\Lib\io.py", line 54, in <module>
    ImportError: cannot import name 'text_encoding' from 'io' (unknown 
location)

If I understand well, I'll have to write a customized startup script, 
with correct path (not pointing to my c:\python\lib) so that QGis can 
start using the included Python interpreter (and not my system-wide 
one). But I didn't find how to achieve that.

Later, I think I'll have to write some QGis Python code. Then, I'll need 
to run it in "developer" mode : being able to put the source code in a 
git repository, edit the code in PyCharm, and run it. Any clues are welcome.

Thank you in advance. Kind regards
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