from tkinter import *
import time
import random
class Ball:
def init (self,canvas,color):
# print("begin create ball:",type(canvas),color)
self.canvas=canvas
self.id=canvas.create_oval(10,10,25,25,fill=color) #，绘制带颜色和上下坐标的椭圆形oval，保存小球ID
self.canvas.move(self.id,250,100) #用x方向和y方向位移，让小球移动到中心位置（500/2200/2)
starts=[-3,-2,-1,1,2,3]
random.shuffle(starts) #重新洗牌，对随机数重新放置
self.x=starts[0]
self.y=-3
self.canvas_height=self.canvas.winfo_height() #获取画布当前高度
self.canvas_width=self.canvas.winfo_width() #获取画布当前宽度
tk = Tk()
tk.title('弹球游戏')
tk['width']=400
tk['height']=300
tk.resizable(False,False) #窗口大小不能调整，也可以用0替代False
tk.wm_attributes("-topmost",1) #此窗口放到其他所有窗口之前
canvas = Canvas(tk,width=500,height=400,bd=0,highlightthickness=0) #后面两个具名函数 bd high...表示画笔之外无边框
canvas.pack() #调整画布大小
tk.update() #动画初始化
ball = Ball(canvas,'red') #把画布保存到对象变量中，准备在它上面画球
while True:
ball.draw()
#重画图像
tk.update_idletasks()
tk.update()
#等待一会
time.sleep(0.01)
tk.mainloop() # stops mainloop
用python tkinter模块做一个击打反弹球和球拍的游戏。球在屏幕上飞，玩家需要把它击打回去，只要球落到屏幕底部，游戏就结束。
首先我们做一个在屏幕上到处移动的小球：
#coding:utf-8from tkinter import *
import random
import time
class Ball:
#创建一个球类
def __init__(self, canvas, color):
self.canvas = canvas
self.id = canvas.create_oval(10, 10, 25, 25, fill=color)
#返回刚好划小球的id，create_oval创建一个椭圆
self.canvas.move(self.id, 245, 100)
#把椭圆移动到画布
starts = [-3, -2, -1, 1, 2, 3]
random.shuffle(starts)
#随机排列
self.x = starts[0]
self.y = -3
self.canvas_height = self.canvas.winfo_height()
#获取画布当前高度
self.canvas_width = self.canvas.winfo_width()
#获取画布当前宽度
def draw(self):
self.canvas.move(self.id, self.x, self.y)
#让小球水平和垂直移动
pos = self.canvas.coords(self.id)
#coords返回画布上画好的x和y坐标
#判断小球是否撞到画布顶部或者底部，保证小球反弹回去，不消失
if pos[1] <= 0:
self.y = 3
if pos[3] >= self.canvas_height:
self.y = -3
if pos[0] <= 0:
self.x = 3
if pos[2] >= self.canvas_width:
self.x = -3
tk = Tk()
tk.title("Game")
tk.resizable(0, 0)
#窗口大小不可调整
tk.wm_attributes("-topmost", 1)
#使画布窗口置于所有窗口之前
canvas = Canvas(tk,width=500, height=400, bd=0, highlightthickness=0)
#bd和highlighttthickness是为了保证画布没有边框
canvas.pack()
tk.update()
#动画初始化
ball = Ball(canvas, 'red')
while 1:
#画布一出现会马上消失，为了防止画布消失，用tkinter一直重画
ball.draw()
tk.update_idletasks()
tk.update()
time.sleep(0.01)
一个会动的小球就做好啦
效果图如下，只是它会动<(￣3￣)>!
high = 100n = 10
high_all = 0 #第n次落地时走过的长度
high_each = 0 #每次落地的高度
def ball_lands(n):
global high_all, high_each, high
#小球第一次落地时
if n == 0:
high_each = high
high_all += high_each
#print('1', high_each, high_all)
return high_each
#从小球第n次落地往前推
high_each = high * (1 / 2) ** n
print(u'第%d次小球弹起的高度为：%.2f' %(n, high_each))
high_all += high_each * 2
#print('2', high_each, high_all)
ball_lands(n - 1)
ball_lands(n)
print(u'小球落地%d次，共经过%.2f米。' % (n,high_all))
