[m0dem]

No didn't notice I had to call screen only used pygameinit()
Any recommendations then?

This should work:

Code:

import pygame
import sys

# initilalization
pygame.init()
screen = pygame.display.set_mode((1024, 1024))
running = True

while running:
    # proceed events
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        
        elif event.type == pygame.MOUSEBUTTONUP:
            print("Mouse event...")

pygame.quit()
sys.exit()

As you will see, it might not be exactly what you want...