import pygame
import sys
pygame.init()
w = 600
h = 400
pygame.display.set_mode((w, h),pygame.RESIZABLE)
while 1:
    if w<1200 or w>4:
          w+=50
          pygame.display.set_mode((w, h),pygame.RESIZABLE)
          pygame.display.set_caption("Длина = {}, Ширина = {}".format(w, h))
          pygame.time.delay(2000)
    else:
          w-=50
          pygame.display.set_mode((w, h),pygame.RESIZABLE)
          pygame.display.set_caption("Длина = {}, Ширина = {}".format(w, h))
          pygame.time.delay(2000)

while 1:
  for i in pygame.event.get():
    if i.type == pygame.QUIT:
      pygame.quit()
      sys.exit()