On macOS only, env variable TKVLC_LIBTK_PATH can be used to specify one or several paths to get libtkX.Y.dylib matching the tkinter module in the Python 3 (in case the standard location for libtkX.y.dylib fails).
Also on macOS only, tkvlc.py will try to find libtkX.Y.lib in Homebrew locations /{opt,usr}/local/Cellar/tcl-tl/.../lib/libtkX.Y.dylib.
On macOS only, env variable
TKVLC_LIBTK_PATHcan be used to specify one or several paths to getlibtkX.Y.dylibmatching thetkintermodule in the Python 3 (in case the standard location forlibtkX.y.dylibfails).Also on macOS only,
tkvlc.pywill try to findlibtkX.Y.libinHomebrewlocations/{opt,usr}/local/Cellar/tcl-tl/.../lib/libtkX.Y.dylib.Remove all broken Python 2 code.
Cosmetic changes.