random numbers, randint

[janeik]

It makes perfect sense to me hat or works. The and loops stops if either comparison is false. True and True == True, True and False == False, False and True == False, False and False == False. SO if a == 9 or if b == 20, the loop stops.

Or works because the only way for the loop to end is for both comparisons to be False: True or True == True, True or False == True, False or True == True, False or False == False. The only way for the loop to end with an or is for a != 9 to be False (a == 9) and b != 20 to be False (b == 20)

Maybe you'll like this better:

while not (a == 9 and b == 20):

What is the purpose of this code. It is really strange. Why not set a = 9 and b = 20 and c and d to random numbers?

There is no reason to initialize a, b, c and d to zero.

Why are you using tkinter? If you want a window to pop up and display the results, all you need is an input statement.

from random import randint

while True:
    a = randint(1,16)
    b = randint(13,29)
    c = randint(16,34)
    d = randint(22,40)
    if a == 9 and b == 20:
        break
print(a, b, c, d)
input()

Hello and thanks for reply.
The numbers given for a,b,c,d (i.e. 1-16) are mean numbers combined with standard deviations for each number, to define areas (swing) (i.e.: 1-16,13-29...)

Numbers i.e. 9,20 are part of lottery draw.