使用按钮绘制形状(Python Tkinter)

import tkinter as tk

def draw_rectangle():
    canvas.create_rectangle(50, 50, 200, 150, fill="red")

def draw_circle():
    canvas.create_oval(50, 50, 200, 200, fill="blue")

def draw_triangle():
    canvas.create_polygon(50, 150, 125, 50, 200, 150, fill="green")

root = tk.Tk()
root.title("绘制形状")

canvas = tk.Canvas(root, width=250, height=250)
canvas.pack()

rectangle_button = tk.Button(root, text="绘制矩形", command=draw_rectangle)
rectangle_button.pack()

circle_button = tk.Button(root, text="绘制圆形", command=draw_circle)
circle_button.pack()

triangle_button = tk.Button(root, text="绘制三角形", command=draw_triangle)
triangle_button.pack()

root.mainloop()