Creating a timer with a pause function in python

Question

I have been helped to make a timer where if I press the space key, it restarts. I would like to edit this code so when I press the return/enter button, it pauses the timer, regardless of where the timer is (restarted, at 0, or in the middle). Of course, I don't want it to affect the rest of the code. Here is my code:

from turtle import Screen, Turtle, bgcolor
bgcolor('dodgerblue')
FONT = ("Arial", 60, "normal")

strings = input("Please enter the time: ").strip().split(' ')

time = [60 ** (len(strings) - index - 1) * int(unit) for index, unit in enumerate(strings)]

seconds = -1
ticking = False
def delSec(string):
    if len(string)==1:
        return "0"+string
    else:
        return string
def tick():
    global seconds, ticking

    turtle.clear()

    if seconds < 0:
        turtle.write("TIMER DONE", align='center', font=FONT)
        ticking = False
    else:
        turtle.write(delSec(str(seconds//3600))+":"+delSec(str((seconds%3600)//60))+":"+delSec(str((seconds%60)//1)), align='center', font=FONT)
        seconds -= 1
        screen.ontimer(tick, 1000)
key = "space"
def reset():
    global seconds, ticking, key

    screen.onkey(None, key)  # Disable event handler inside handler

    seconds = sum(time)

    if not ticking:
        ticking = True
        tick()

    screen.onkey(reset, key)  # Reenable event handler

screen = Screen()

turtle = Turtle()
turtle.hideturtle()
turtle.color('white')

reset()

screen.listen()
screen.mainloop()

I would appreciate any help, thanks in advance!

EDIT: I want it so that if the timer is paused, I can still reset it.

furas · Accepted Answer · 2020-02-18 02:54:30Z

1

I use key Return to run function which change paused

def pause():
    global paused

    paused = not paused

and use this paused to control tick()

def tick():
    global seconds, ticking

    if not paused:
        turtle.clear()

        if seconds < 0:
            turtle.write("TIMER DONE", align='center', font=FONT)
            ticking = False
            return
        else:
            turtle.write(delSec(str(seconds//3600))+":"+delSec(str((seconds%3600)//60))+":"+delSec(str((seconds%60)//1)), align='center', font=FONT)
            seconds -= 1

    screen.ontimer(tick, 1000)

tick() has to run ontimer() even if it paused

from turtle import Screen, Turtle, bgcolor

# --- functions ---

def delSec(string):
    if len(string) == 1:
        return "0" + string
    else:
        return string

def tick():
    global seconds, ticking

    if not paused:
        turtle.clear()

        if seconds < 0:
            turtle.write("TIMER DONE", align='center', font=FONT)
            ticking = False
            return
        else:
            turtle.write(delSec(str(seconds//3600))+":"+delSec(str((seconds%3600)//60))+":"+delSec(str((seconds%60)//1)), align='center', font=FONT)
            seconds -= 1

    screen.ontimer(tick, 1000)

def reset():
    global seconds, ticking, key,
    #global paused

    screen.onkey(None, key)  # Disable event handler inside handler
    screen.onkey(None, key_pause)  # Disable event handler inside handler

    seconds = sum(time)

    if not ticking:
        ticking = True
        tick()

    #paused = False

    screen.onkey(reset, key)  # Reenable event handler
    screen.onkey(pause, key_pause)  # Reenable event handler

def pause():
    global paused

    paused = not paused

# --- main ---

bgcolor('dodgerblue')
FONT = ("Arial", 60, "normal")

#strings = input("Please enter the time: ").strip().split(' ')
strings = '10'.strip().split(' ')

time = [60 ** (len(strings) - index - 1) * int(unit) for index, unit in enumerate(strings)]

seconds = -1
ticking = False
paused = False
key = "space"
key_pause = "Return"

screen = Screen()

turtle = Turtle()
turtle.hideturtle()
turtle.color('white')

reset()

screen.listen()
screen.mainloop()

To reset text even when it paused I pause only seconds -= 1 - so it redraw time in every loop - even if it paused - so reset can change value.

def tick():
    global seconds, ticking


    turtle.clear()

    if seconds < 0:
        turtle.write("TIMER DONE", align='center', font=FONT)
        ticking = False
        return
    else:
        turtle.write(delSec(str(seconds//3600))+":"+delSec(str((seconds%3600)//60))+":"+delSec(str((seconds%60)//1)), align='center', font=FONT)
        if not paused:
              seconds -= 1

    screen.ontimer(tick, 1000)

edited Feb 18, 2020 at 2:54

answered Feb 18, 2020 at 1:58

furas

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4 Comments

furas Over a year ago

when you press 'space' and later unpause it then you will see it is reseted.

furas Over a year ago

to update reseted clokc automatically when it paused it would need some work.

Mike Smith Over a year ago

No that's fine. Thank you!

furas Over a year ago

I moved if not paused: and now it pauses only seconds -= 1 and it redraws text in every loop so reset can change its value - but now it blink even when it paused.

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