Class Struggle: Connecting a Method to an Outside Variable

[Gribouillis]

The explicit order of the args is addressed via the grid args, isn't it?

The signature of the grid method is

>>> inspect.signature(tkinter.Button.grid)
<Signature (self, cnf={}, **kw)>

The documentation doesn't suggest a particular order for the arguments, so yes the keywords are needed.

"myVar" doesn't belong. I think. It's there for lack of an alternative method

I think myVar is indeed misleading in a tkinter program if the value is not a tkinter variable.