Windows Python (

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Bingo, the finding in the update #1 was the cause. The space in my username was the culprit. Although I have no idea what triggered this behavior change on my account… (anybody with an answer, please follow up.)

Let’s say the per-user python is installed at

C:\Users\User Name\AppData\Local\Programs\Python\Python310

In my case, “Microsoft Visual C++ 2015-2022 Redistributable” installer (VC_redist.x64.exe) left a log file C:\Users\User (a text file with the first part of my account name as its file name). This caused python venv to use C:\Users\User as the python executable and promptly failed (see the issue tracker link below for the full explanation).

You can fix the issue in 2 ways until Python patches the problem.

Easy Fix

Simply delete the file C:\Users\User

Note: This will work until next time another installer leaves this nasty log file.

More Involved Fix

In command console, run

DIR /X C:\Users

which lists something like:

02/08/2022  11:44 AM    <DIR>                       .
02/08/2022  11:44 AM    <DIR>                       ..
11/19/2020  01:48 AM    <DIR>                       Public
02/08/2022  02:47 PM    <DIR>          USERNA~1     User Name

Open the Environmental Variables dialog and edit Path user variable’s Python entries from

C:\Users\User Name\AppData\Local\Programs\Python\Python310\Scripts
C:\Users\User Name\AppData\Local\Programs\Python\Python310

to

C:\Users\USERNA~1\AppData\Local\Programs\Python\Python310\Scripts
C:\Users\USERNA~1\AppData\Local\Programs\Python\Python310

Re-open python console window or app so the path change is applied to your dev environment.

Note: This fix will work as long as you don’t update python version. When you do, you need to delete the old path entries manually and update the new path entries.

Eventual Fix

I reported this bug to python bug tracker: Issue 46686. They’ve acknowledged the bug and have it labeled as critical with a proposed fix. So, hopefully it will get fixed in a near future release. (>3.10.2)

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