> When writing to a pipe, wmic.exe hard codes using the process OEM code page (i.e. CP_OEMCP). If it matters, running wmic.exe with subprocess should use encoding='oem' instead of text=True.

Oh ok, I wrote PR 30890 to fix the wmic.exe encoding.

I would prefer to avoid a named temporary file if possible, until it's really needed.

I'm only aware of the Fedora operating system which made fun of non-ASCII users once with "Fedora release 19 (Schrödinger's Cat)": https://lwn.net/Articles/545741/