python程序设计:画一个射箭运动所用的箭靶.从小到大分别黄,红,蓝,黑...答:from Tkinter import *step=50color=("white","black","blue","red","yellow")canvas=Canvas(None,width=600,height=600)canvas.pack()for i in range(5,0,-1): canvas.create_oval(300-i*step,300-i*step,300+i*step, 300+i*step,fill=color[-i],outline="orange")mainloop()