M to loop through modes of time signature

16_m_to_loop_through_ts_modes_part.py

time_signatures = {0: [' 2 / 4', (2, 4)], 1: [' 3 / 4',(3 ,4)], 2: [' 4 / 4',(4, 4)], 3: [' 2 / 2',(2, 2)],
                   4: [' 6 / 8',(6, 8)], 5: [' 9 / 8',(9, 8)], 6: ['12/ 8',(12, 8)],
                   7: [' * / 4',(-1, 4)], 8: [' * / 2',(-1,2)], 9: [' * / 8',(-1,8)]}

def key_pressed(event):
    global ON, ts_mode, time_signatures
    if event.char == ' ':
        ON = not ON
    elif event.char == 't':
        tap_estimate()
    elif event.char =='m':
        ts_mode.set((ts_mode.get() + 1)%len(time_signatures))
    elif event.char == 'q':
        exit()