Windows: Provide an option to disable search in CWD on `shutil.which`

I would like to search for an executable in the PATH but not from the current working directory (cwd). By default, as documented in shutil.which, it prepends the cwd before PATH, so it's not possible to get the expected executable.

For example, I have a whoami.exe in the cwd but I would like to get the one from the system32 directory; there's no way to do so using shutil.which.

>>> import shutil
>>> shutil.which('whoami')
'.\\whoami.EXE'

I think it makes sense for that to be the default behaviour since that's how it is on Windows. I would like to have a parameter to disable this behaviour in shutil.which.

Thanks!

Inizia dal punto di ingresso shutil.which e dalla relativa documentazione, concentrandoti sulla ricerca specifica di Windows nella directory corrente descritta nell’issue. Il lavoro è completo quando i chiamanti possono escludere quella ricerca e trovare l’eseguibile corrispondente più avanti in PATH, incluso l’esempio whoami.exe.