Python画矩形和圆形

import tkinter;if __name__ == '__main__':    from tkinter import *    root = Tk()    root.title('Canvas')    canvas = Canvas(root, width=400, height=400, bg='yellow')    x0 = 200    y0 = 200    y1 = 200    x1 = 200    for i in range(5):        canvas.create_rectangle(x0, y0, x1, y1)        canvas.create_oval(x0, y0, x1, y1)        x0 -= 10        y0 -= 10        x1 += 10        y1 += 10    canvas.pack()    root.mainloop()

这里需要导入tkinter模块，这个模块无需安装，已经自带了。