It is now possible to deprecate passing keyword arguments for keyword-or-positional parameters with Argument Clinic, using the new '/ [from X.Y]' syntax. (To be read as "positional-only from Python version X.Y") Co-authored-by: Erlend E. Aasland <erlend@python.org> Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>