目录

63.题目：画椭圆

1.tkinter画椭圆

 2.turtle画椭圆

 64.题目：利用ellipse 和 rectangle 画图

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63.题目：画椭圆

1.tkinter画椭圆

#63
from tkinter import *
x = 360
y = 160
top = y - 30
bottom = y - 30canvas = Canvas(width = 500,height = 600,bg = 'white')
for i in range(20):canvas.create_oval(250 - top,250 - bottom,250 + top,250 + bottom)top -= 5bottom += 5
canvas.pack()
mainloop()

 输出：

 2.turtle画椭圆

import turtlepen=turtle.Turtle()                #定义画笔实例
a=1
for i in range(120):                if 0<=i<30 or 60<=i<90:        #控制a的变化a=a+0.2pen.lt(3)                  #向左转3度pen.fd(a)                  #向前走a的步长else:a=a-0.2pen.lt(3)pen.fd(a)print(pen)
turtle.mainloop()

输出：

 64.题目：利用ellipse 和 rectangle 画图

from tkinter import *
canvas = Canvas(width = 400,height = 600,bg = 'white')
left = 20
right = 50
top = 50
num = 15
for i in range(num):canvas.create_oval(250 - right,250 - left,250 + right,250 + left)canvas.create_oval(250 - 20,250 - top,250 + 20,250 + top)canvas.create_rectangle(20 - 2 * i,20 - 2 * i,10 * (i + 2),10 * ( i + 2))right += 5left += 5top += 10canvas.pack()
mainloop()

输出：