Python实例-毕业项目设计：五星红旗绘制，图形用户界面，教育与展示

import turtle import math turtle.pensize(1) turtle.up() turtle.left(90) turtle.forward(200) turtle.left(90) turtle.forward(300) turtle.down() turtle.color("red") turtle.begin_fill() for i in range(2): turtle.left(90) turtle.forward(400) turtle.left(90) turtle.forward(600) turtle.end_fill() turtle.up() turtle.left(90) turtle.forward(100) turtle.left(90) turtle.forward(100) turtle.left(90) turtle.forward(60) turtle.down() # 大五角星 turtle.color("yellow") turtle.right(162) def paint1(): turtle.begin_fill() l=(60*math.cos(math.radians(18)))/(1+math.sin(math.radians(18))) for i in range(5): turtle.forward(l) turtle.left(72) turtle.forward(l) turtle.right(144) turtle.end_fill() paint1() #画五角星 def paint2(): turtle.right(162) turtle.begin_fill() l=(20*math.cos(math.radians(18)))/(1+math.sin(math.radians(18))) for i in range(5): turtle.forward(l) turtle.left(72) turtle.forward(l) turtle.right(144) turtle.end_fill() def paint3(): turtle.right(72) turtle.begin_fill() l=(20*math.cos(math.radians(18)))/(1+math.sin(math.radians(18))) for i in range(5): turtle.forward(l) turtle.left(72) turtle.forward(l) turtle.right(144) turtle.end_fill() def paint4(): turtle.left(18) turtle.begin_fill() l=(20*math.cos(math.radians(18)))/(1+math.sin(math.radians(18))) for i in range(5): turtle.forward(l) turtle.left(72) turtle.forward(l) turtle.right(144) turtle.end_fill() #第一个小五角星 turtle.up() turtle.left(72) turtle.forward(120) turtle.down() paint2() #第二个小五角星 turtle.up() turtle.left(162) turtle.forward(20) turtle.right(90) turtle.forward(40) turtle.right(math.degrees(math.atan(1/7))) turtle.forward(20) turtle.down() paint2() #第三个小五角星 turtle.up() turtle.left(180-math.degrees(math.atan(1/7))) turtle.forward(20) turtle.left(90) turtle.forward(20*(1/7)) turtle.down() paint3() #第四个小五角星 turtle.up() turtle.right(18) turtle.forward(60) turtle.right(90) turtle.forward(20) turtle.down() paint4() turtle.color("red")