print-temp.py

import pygame
from gpiozero import CPUTemperature

pygame.init()
clock = pygame.time.Clock()

screen = pygame.display.set_mode([400, 400])
font = pygame.font.SysFont(None, 400)

cpu = CPUTemperature()

running = True

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

    temp = str(round(cpu.temperature))

    screen.fill((0, 0, 0))
    screen.blit(font.render(temp, True, (255, 255, 255)), (0, 0))

    pygame.display.flip()

    clock.tick(8)