制作一个有顶层窗口式的单摆python程序

好的，以下是一个简单的单摆Python程序，使用了Tkinter库来实现有顶层窗口式的界面：

import math
import tkinter as tk

class Pendulum:
    def __init__(self, length, angle, dt=0.01, g=9.8):
        self.length = length
        self.angle = angle
        self.dt = dt
        self.g = g
        self.velocity = 0
        self.acceleration = 0
    
    def update(self):
        self.acceleration = -self.g/self.length * math.sin(self.angle)
        self.velocity += self.acceleration * self.dt
        self.angle += self.velocity * self.dt
    
    def get_xy(self):
        x = self.length * math.sin(self.angle)
        y = self.length * math.cos(self.angle)
        return x, y

class PendulumApp:
    def __init__(self):
        self.window = tk.Tk()
        self.window.title("单摆程序")
        self.canvas = tk.Canvas(self.window, width=500, height=500, bg="white")
        self.canvas.pack()
        self.pendulum = Pendulum(length=200, angle=math.pi/4)
        self.draw_pendulum()
        self.window.after(10, self.update)
        self.window.mainloop()
    
    def draw_pendulum(self):
        x0 = 250
        y0 = 50
        x1, y1 = self.pendulum.get_xy()
        self.canvas.delete("all")
        self.canvas.create_line(x0, y0, x0+x1, y0+y1, width=2, fill="blue")
        self.canvas.create_oval(x0-10, y0-10, x0+10, y0+10, fill="blue")
        self.canvas.create_oval(x0+x1-10, y0+y1-10, x0+x1+10, y0+y1+10, fill="blue")
    
    def update(self):
        self.pendulum.update()
        self.draw_pendulum()
        self.window.after(10, self.update)

if __name__ == "__main__":
    app = PendulumApp()

程序中定义了一个Pendulum类，表示单摆，包含了单摆的物理量和运动模拟方法。PendulumApp类则表示程序的窗口界面，使用了Tkinter库来实现。在程序运行时，窗口中会显示一个单摆的摆动过程。