import pygame, sys

def rotate(surface,angle):
    rotated_surface = pygame.transform.rotozoom(surface,-angle,1)
    rotated_rect = rotated_surface.get_rect(center = (300,300))
    return rotated_surface,rotated_rect

pygame.init()
clock = pygame.time.Clock()
screen = pygame.display.set_mode([600,600])
Cow = pygame.image.load("Cow.png")
Cow_rect = Cow.get_rect(center= (300,300))
angle = 0

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

    angle += 1
    screen.fill((255,255,255))
    Cow_rotated,Cow_rotated_rect = rotate(Cow,angle)
    
    screen.blit(Cow_rotated,Cow_rotated_rect)
    pygame.display.flip()
    clock.tick(30)