When I install python using
brew install python --with-tcl-tk
Warning: python: this formula has no --with-tcl-tk option so it will be ignored!
However, then the version of Tcl/Tk that is used is 8.5 (old native version from Mac).
The tcl/tk version from home-brew is: /usr/local/Cellar/tcl-tk/8.6.8
I have updated the Tcl/Tk version on my Mac (see tkdocs.com), so that in bash, I get:
% info patchlevel
However, still python3 uses the old Tcl/TK version:
Unstalling and reinstalling python in homebrew does not help.
When I install python from python.org, python does use the (builtin) Tcl/Tk 8.6 version.