Get rid of nearly all clals to self._do -- turns out self.tk.call can be used just as well, so this saves one Python call in many cases!
Get rid of nearly all clals to self._do -- turns out self.tk.call can
be used just as well, so this saves one Python call in many cases!

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator