rectangle.py

import sys
import pygame


screen_width, screen_height = 800, 600

pygame.init()
screen = pygame.display.set_mode((screen_width, screen_height))

pygame.display.set_caption("My Pygame")
fill_color = (32, 52, 71)

rect_width, rect_height = 100, 200
rect_x = screen_width / 2 - rect_width / 2
rect_y = screen_height / 2 - rect_height / 2
rect_color = pygame.Color('lightyellow')

STEP = 10

while True:
    for event in pygame.event.get():
        #print(event)
        if event.type == pygame.QUIT:
            sys.exit()
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP and rect_y >= STEP:
                rect_y -= STEP
            if event.key == pygame.K_DOWN and rect_y <= screen_height - rect_height - STEP:
                rect_y += STEP
            if event.key == pygame.K_LEFT and rect_x >= STEP:
                rect_x -= STEP
            if event.key == pygame.K_RIGHT and rect_x <= screen_width - rect_width - STEP:
                rect_x += STEP




    screen.fill(fill_color)
    pygame.draw.rect(screen, rect_color, (rect_x, rect_y, rect_width, rect_height))
    pygame.display.update()