A system I created for animating in python by making python wait a certain amount of seconds by making a variable subtract by 1.

Python Scaling System Conversions.txt

25 = 1 sec
50 = 2 sec
75 = 3 sec
100 = 4 sec
125 = 5 sec

every 25 adds 1 sec
every 50 adds 2 sec

ScalingSystemExample.py

import pygame

pygame.init()

display = pygame.display.set_mode([700,600])

time = 25

running = True
clock = pygame.time.Clock()
FPS = 30

def tick():
    global time
    if time > 0:
        time -= 1

def loop():
    global running
    global time
    global tick

    print "odio"

    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False

        if time < 1:
            print "it worked"

        if time > 0:
            tick()

        print time

        pygame.display.update()
        clock.tick(FPS)

    pygame.quit()
    quit()

loop()