Windows 7, Python 3.7.1:260ec2c36a

after doing

    C:\python\python -m venv C:\myvenv

and then

    C:\>myvenv\Scripts\activate.bat

it prints

    parameter format not correct - 65001

However, it activates the venv - the prompt shows

    (myvenv) C:\>

and

    C:\myvenv\Scripts;

gets prepended to PATH.

When i outcomment

    for /f "tokens=2 delims=:" %%a in ('"%SystemRoot%\System32\chcp.com"') do (
        set "_OLD_CODEPAGE=%%a"
    )

in the activate.bat then the message wont show up.

related: https://stackoverflow.com/questions/51358202/python-3-7-activate-venv-error-parameter-format-not-correct-65001-windows

This seems related to bpo-32409.

Yes, you are right, Vinay Sajip, it actually prints 'Parameterformat falsch - 65001.' (i translated it) and https://bugs.python.org/issue35148#msg332182 may possibly be a fix for that.

So, https://bugs.python.org/issue35148 is the Superseder i guess, and this can be set to to 'closed' and 'duplicate' but i dont know how to do this. There is no text entry in 'Superseder' ('Ersetzt durch') above.