pythonのpygame初体验

import pygame

import sys

from pygame.locals import *

#初始化pygame
pygame.init()

size = width,height=600,400

speed=[-2,1]
# rgb
bg=(255,255,255)

clock = pygame.time.Clock()

#创建指定大小窗口 surface
screen = pygame.display.set_mode(size)

# 设置窗口标题
pygame.display.set_caption("初次见面，请多多关照")

#加载图片
image = pygame.image.load("qq.png")
#获取图像的位置矩形
position = image.get_rect()

# 图像翻转
l_head = image
# 图像翻转
r_head = pygame.transform.flip(image,True,False)

while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
        if event.type == KEYDOWN:
            if event.key==K_LEFT:
                image = l_head
                speed = [-1,0]
            if event.key==K_RIGHT:
                image = r_head
                speed = [1,0]
            if event.key==K_UP:
                speed = [0,-1]
            if event.key==K_DOWN:
                speed = [0,1]

    #移动图像
    position = position.move(speed)
    if position.left < 0 or position.right>width:
        #翻转图像 flip(surface对象,是否水平翻转,是否垂直翻转)
        image = r_head
        #反方向移动
        speed[0] = -speed[0]

    if position.top<0 or position.bottom > height:
        speed[1] = -speed[1]

    # 填充背景
    screen.fill(bg)
    # 更新图像
    screen.blit(image,position)
    # 更新界面
    pygame.display.flip()
    #延迟10毫秒
    # pygame.time.delay(10)
    clock.tick(20)