Python - Error en la ejecución del programa

import time

reloj=True

second=0

minute=0

hour=0

hora = second , ":", minute, ":", second

while reloj==True:

    print(hora)

    second=second+1

    time.sleep(1)

    if second > 59:

        second=0

        minute=minute+1

        if minute > 59:

            hour=hour+1

import time

reloj = True

second = 0

minute = 0

hour = 0

while reloj == True:

    print(f"{hour}:{minute}:{second}")

    second = second+1

    time.sleep(1)

    if second > 59:

        second = 0

        minute = minute+1

        if minute > 59:

            hour = hour+1

import time

#reloj=True #como nunca obtiene un valor de falso es innecesario

second=0

minute=0

hour=0

while True:  #sacamos reloj

    hora = hour , ":", minute, ":", second #las variables dentro del bucle

    print(hora)

    second=second+1

    time.sleep(1)

    if second > 59:

        second=0

        minute=minute+1

        if minute > 59:

            hour=hour+1