"py.ini" question

[Barry Scott]

> On 24 Apr 2021, at 15:23, Gisle Vanem <gisle.vanem at gmail.com> wrote:
> 
> I have a question about the Python launcher;
>  c:\Windows\py.exe and the py.ini file.
> 
> I have both Python 3.6 (32-bit) and Python 3.8 (64-bit)
> installed. And I have a 'c:\Users\Gisle\AppData\Local\py.ini'
> with this only:
>  [defaults]
>  python=3.6
> 
> A copy of this is also in 'c:\Windows\py.ini'.
> So when I do a:
>  py -3 -c "import sys; print(sys.version)"
> 
> I would assume a "3.6..." would be printed.
> But no, py.exe chooses to run my newest Python 3.8:
>  3.8.9 (default, Apr 13 2021, 15:54:59)  [GCC 10.2.0 64 bit (AMD64)]
> 
> Only when I do 'py -3.6 -c ...', I get what I'd expect.
> 
> So is a 'py.ini' and the '[defaults]' simply ignored
> or is my syntax wrong?

You can find out what py.exe is using for its config by running:

	py -0

The entry with an * at the end is the default.

On windows 10 your personal py.ini is in %localappdata%\py.ini
do you have one?

	type %localappdata%\py.ini

If not you might want to create one that sets things up as you need them configured.

Here is what I have on my windows 10:

C:\Users\barry>py -0
Installed Pythons found by py Launcher for Windows
 -3.10-64
 -3.10-32
 -3.9-64 *
 -3.9-32
 -3.8-64
 -3.8-32
 -3.7-64
 -3.7-32
 -3.6-64
 -3.6-32
 -3.5-64
 -3.5-32
 -3.4-64
 -3.4-32
 -2.7-64
 -2.7-32


C:\Users\barry>type %localappdata%\py.ini
[defaults]
python=3.9-64
python3=3.9-64

C:\Users\barry>py
Python 3.9.4 (tags/v3.9.4:1f2e308, Apr  6 2021, 13:40:21) [MSC v.1928 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

Barry


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