Cronometro

#https://py3.codeskulptor.org/#user304_VmgdyOvNRdpTXSo.py

import simplegui

global time, timeString, acerto, tentativa
global rodando

def formato(tempo):
    decseg = tempo % 10
    seg = (tempo - decseg) / 10 % 60
    minu = tempo // 600
        
    return "%.0f:%.0f.%.0f" % (minu, seg, decseg)


def timer_handler():
    global time, timeString
    
    time = time + 1
    timeString = formato(time)


def draw_handler(canvas):
    global timeString, acerto, tentativa
    
    canvas.draw_text("%i/%i" % (acerto, tentativa), [390,30], 30, 'White')
    canvas.draw_text(timeString, [150, 100], 40, 'Blue')


def comecar_handler():
    global rodando
    rodando = True 
    timer.start()


def parar_handler():
    global acerto, tentativa, rodando, time
    timer.stop()
    if(rodando):
        tentativa = tentativa + 1
        if(time % 10 == 0):
            acerto = acerto + 1
            
    rodando = False


def resetar_handler():
    global acerto, tentativa, rodando, time, timeString
    timer.stop()
    time = 0
    acerto = 0
    tentativa = 0
    rodando = False
    timeString = "0:00.0"


frame = simplegui.create_frame("Home", 450, 300)
frame.set_draw_handler(draw_handler)
frame.start()

comecar = frame.add_button('Começar', comecar_handler)
parar = frame.add_button('Parar', parar_handler)
resetar = frame.add_button('Resetar', resetar_handler)

timer = simplegui.create_timer(100, timer_handler)

resetar_handler()