Automatically expiring variable

Question

How to implement an automatically expiring variable in python? For example, Let the program running For one hour. I want implement an array of 6 variables, each variable in

Answer 1

import sched
import time
import threading

a = [1, 2, 3, 4, 5, 6]

scheduler = sched.scheduler(time.time, time.sleep)

def delete(_list):
    del _list[0]

for i in range(len(a)):
    scheduler.enter(60*10*i, 1, delete, (a,))

t = threading.Thread(target=scheduler.run)

t.start()