I'm using vim together with jedi-vim for development (python3). Usually, the autocomplete does trigger when one edits the argument e.g. of a function like in the following figure:
You start to type the first characters of an argument and the suggestions pop up or you can trigger the autocompletion by using the corresponding binding (default crtl-space).
In contrast to the previous case, the autocompletion fails if you want edit tkinter funkctions (depicted in the following figure):
Is there an additional library for tkinter/python that is needed for this type of autocomplete or am I doing something wrong?