timers

# Countdown Timer - not guiZero
from time import sleep

def decrease():
    global currentTime
    sleep(1)
    currentTime -= 1

def displayTime(currentTime):
    mins = currentTime // 60
    secs = currentTime % 60
    if secs < 10:
        secs = '0'+str(secs)
    print(f"{mins}:{secs}")

print('Starting')
currentTime = 120
while currentTime >= 0:
    displayTime(currentTime)
    decrease()
print('Game Over')

#................................................

# Change Button bg colour using .repeat
from guizero import App, PushButton

app = App(title="Timers",width="600",height="100",bg="white")


# Event Handlers
def changeBg():
    if btn_open.bg == 'white':
        btn_open.bg = 'black'
        btn_open.text_color = 'white'
    else:
        btn_open.bg = 'white'
        btn_open.text_color = 'black'


#  Widgets
btn_open = PushButton(app,align="top", text="Click Me", width="fill")
btn_open.bg = 'white'
btn_open.text_color = 'black'

btn_open.repeat(1000,changeBg)

# Show the GUI on the screen
app.display()