xcp/dmv.py: Fix nitpicks found by Copilot review, add module/function docstring#168

bernhardkaindl merged 2 commits intoxenserver:masterxenserver/python-libs:masterfrom

bernhard-xapi:dmv-fix-nitpicks-add-module-docstringbernhard-xapi/python-libs:dmv-fix-nitpicks-add-module-docstringCopy head branch name to clipboard