How to use the musictheory.mnote function in musictheory

if inp2 in "Yy":
                    return chord
                elif inp2 in "Nn":
                    break
                elif inp2 in "Pp":
                    previewChord(chord)
        elif inp in "Ii":
            scaleInfo(scale)
        elif inp in "Qq":
            return None
        else:
            notenames = str.split(inp, " ")
            notes = ()
            for i in range(len(notenames)):
                if len(notenames[i]) != 0:
                    notes = notes + (musictheory.mnote.fromName(notenames[i] + "0"),)
            if len(notes) == 1:
                for i in scale.getChords():
                    if i._types[0]._type == notes[0]._type:
                        chord = i
                        break
                pianoprinter.octoPrint(chord._types)
                while True:
                    print(str(chord)+", accept? Yy Nn")
                    inp2 = usrinp()
                    if inp2 in "Yy":
                        return chord
                    elif inp2 in "Nn":
                        break
                
            elif len(notes) == 3:
                chord = musictheory.chord3(notes[0], notes[1], notes[2])