按住某键.py

"""
   按住某键.py
"""

import time
import turtle

WIDTH = 800
HEIGHT = 600

seconds = 0

def text(text, posx, posy, size):
    turtle.pencolor('black')
    turtle.goto(posx, posy)
    ft = ("Arial", size, "normal")    
    turtle.write(text, align='center',font=ft)

def press_space():
    global seconds
    seconds = time.time()
    turtle.onkeypress(None, ' ')

def release_space():
    if time.time() - seconds >= 3.0:
        turtle.onkeyrelease(None, ' ')
        text("thank you.", 0, 0, 15)

# 屏幕设定
turtle.screensize(WIDTH, HEIGHT)
turtle.title("按住某键测试")
turtle.hideturtle()
turtle.penup()

# 在屏幕上写文本
text('请按住空格键3秒', 0, 200, 15)

# 事件处理
turtle.listen()
turtle.onkeypress(press_space, ' ')
turtle.onkeyrelease(release_space, ' ')

# End
turtle.done()