How to stop "while True" in this code after 1 hour

Question

import time

while True:
def fivetozero():
i = 1
while i <= 5:
print(i)
i = i + 1
time.sleep(2) #loop every2s
print("finished")

fivetozero()

it goes forever... how to make a stop time for this code or in other words.. make fivetozero() func stop

Answer 1

use datetime and check difference
https://code.sololearn.com/ctLRoch8abdi/?ref=app

Answer 2

Worked! with some little modifications

Answer 3

count=0;

while count<1800:
def fivetozero():
i = 1
while i <= 5:
print(i)
i = i + 1
IF(time.sleep(2)) count++ #loop every2s

print("finished")

fivetozero()

Answer 4

Nice! kheili khub!