def fix_tk86():
    import tkinter
    tkinter._Tk = tkinter.Tk
    def wrapper(func, name):
        Tcl_Obj = tkinter._tkinter.Tcl_Obj
        def f(*args, **kwargs):
            print(name, 'wrapped', args, kwargs)
            t = [i for i in args if isinstance(i, Tcl_Obj)]
            for i in t:
                print(name, 'FOUND arg:', repr(i), type(i), str(i))
            args = [i if not isinstance(i, Tcl_Obj) else str(i)
                    for i in args]
            for key, value in kwargs.items():
                if isinstance(value, Tcl_Obj):
                    print(name, 'FOUND kwarg:', key, value)
                    kwargs[key] = str(value)
            return func(*args, **kwargs)
        return f

    class TkReflector(object):
        def __init__(self, tk):
            self.tk = tk
        def __getattribute__(self, name):
            a = getattr(object.__getattribute__(self, 'tk'), name)
            if hasattr(a, '__call__'):
                return wrapper(a, name)
            else:
                return a

    class TkFix(tkinter.Tk):
        def __init__(self, *args, **kwargs):
            tkinter._Tk.__init__(self, *args, **kwargs)
            self.__tk = self.tk
            version = self.tk.call('info', 'patchlevel')
            if version.startswith('8.6'):
                self.tk = TkReflector(self.__tk)

    tkinter.Tk = TkFix

fix_tk86()

from tkinter import *
print(TkVersion)
root = Tk()
label = Label(root, text='test')
label.pack()
label.pack_info()
root.mainloop()