.py

def create_note_to_midi_dict():
    """
    Create a dict for the the midi implementation table in the Xone K2 manual,
    used to make it easier to refer to the byte values of the midi notes.

    The key value pairs are e.g. ('c#1', 25) or ('g4', 67).
    """
    notes = ['c','c#','d','d#','e','f', 'f#', 'g','g#','a','a#','b']
    octaves = [str(num) for num in range(-1, 10)]
    octave_notes = [note + octave for octave in octaves for note in notes]
    return {octave_notes[i]: i for i in range(len(octave_notes))}


def create_element_color_dict(note_to_midi):
    """
    Create a dict for looking up the midi note to send to light up an element
    in red, yellow or green, corresponding to the table in the Xone K2 manual.

    note_to_midi: dict created with create_note_to_midi_dict()
    """
    return {
        'layer_button' : {
            'red' : note_to_midi["c0"],
            'yellow' : note_to_midi["e0"],
            'green' : note_to_midi["g#0"],
        }
}