psychopy中的code组件

如果想要按“P键”跳转到图片A或B
按“Q”跳转到图片C
怎么实现？？

from psychopy import visual, event, core

# 创建窗口
win = visual.Window(size=(800, 600))

# 加载图片
img_a = visual.ImageStim(win, image='img_a.png')
img_b = visual.ImageStim(win, image='img_b.png')
img_c = visual.ImageStim(win, image='img_c.png')

# 显示图片A
img_a.draw()
win.flip()

# 等待按键事件
while True:
    keys = event.getKeys()
    if 'p' in keys:
        img_b.draw()
        win.flip()
    elif 'q' in keys:
        img_c.draw()
        win.flip()
    elif 'escape' in keys:
        break  # 如果按下“Esc”键，则退出循环