why does my python while loop infinitely?

Question

I am trying to do a while loop that execute a function while the verification is not changed. my code looks like this:

from time import sleep
verif = 0
num = 5
def doso(num, verif):
 if num%11 == 0:
 verif += 1
 elif num%14 == 0:
 verif += 1
 print(num)
 return verif
while verif == 0:
 doso(num, verif)
 num += 1
 sleep(1)

so for now it run infinitely... i would like if it stoped when it find a multiple of 11 or 14

**its an example

• Ma0: because the value of verif is not changed inside the loop. You probably meant to do verif = doso(num, verif)
• mkrieger1: verif += 1 inside the doso function creates a local variable, but does not change the global variable defined above.
• KJTHoward: Does this answer your question? Using global variables in a function

Answer 1

Try updating the variable:

while verif == 0:
 verif = doso(num, verif)
 num += 1
 sleep(1)

Answer 2

To avoid running into an XY problem, note that you do not need verif at all. You can simply do:

num = 5
while True:
 if num%11 == 0 or num%14 == 0:
 break
 else:
 num += 1