import pygame, sys

pygame.init()

display = pygame.display.set_mode((300,300))
display.fill((255,255,255))


# Drawing a circle on the display surface using Pygame's draw.circle() function.
pygame.draw.circle(display, (0,0,255), center=(150,150), radius=50, width=0)
# display: The surface to draw the circle on.
# (0, 0, 255): The color of the circle in RGB format, here it represents blue color.
# center=(150, 150): The center coordinates of the circle, here it's (150, 150).
# radius=50: The radius of the circle, here it's 50 pixels.
# width=0: The width of the outline of the circle. 
# Setting it to 0 means that the circle will be filled with the specified color.

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

    pygame.display.update()