基于python的turtle模块画国旗

基于python的turtle模块画国旗，愿祖国早日战胜病毒

注

• 画国旗是很严肃的问题，一定要按照规定去画
• 国旗宽高比为：3:2
• 国旗标准图
  
• 绘制五角星需要严格的计算
• 科学计算器网站：http://www.ab126.com/
• 知道三角函数值求角度方法，使用excel =ASIN(A1)*180/PI()

import turtle

# 设置画笔速度和画布大小和位置
turtle.speed(10)
turtle.setup(650, 450)
# 画国旗大背景
# 移动画笔需要先把笔抬起来
turtle.up()
turtle.goto(-300, 200)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("red")
turtle.pencolor("red")
# 画出边界
for i in range(2):
    turtle.forward(600)
    turtle.right(90)
    turtle.forward(400)
    turtle.right(90)
# 填充国旗颜色
turtle.end_fill()

# 画大五角星
turtle.up()
turtle.goto(-200, 160)
turtle.seth(-72)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("yellow")
turtle.pencolor("yellow")
for x in range(5):
    turtle.forward(120)
    turtle.right(144)
turtle.end_fill()

# 画第一个小五角星
turtle.up()
turtle.goto(-100 - 17.3145, 160 - 6.174)
turtle.seth(48.96347)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("yellow")
turtle.pencolor("yellow")
for x in range(5):
    turtle.forward(38.0417418)
    turtle.right(144)
turtle.end_fill()

# 画第二个小五角星
turtle.up()
turtle.goto(-60 - 19.7948663580, 120 - 2.857143)
turtle.seth(36.213211)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("yellow")
turtle.pencolor("yellow")
for x in range(5):
    turtle.forward(38.0417418)
    turtle.right(144)
turtle.end_fill()

# 画第三个小五角星
turtle.up()
turtle.goto(-60 - 19.5, 60 + 5.714285848)
turtle.seth(5)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("yellow")
turtle.pencolor("yellow")
for x in range(5):
    turtle.forward(38.0417418)
    turtle.right(144)
turtle.end_fill()

# 画第四个小五角星
turtle.up()
turtle.goto(-100 - 17.2, 20 + 15.99999)
turtle.seth(-35.1301)
turtle.down()
turtle.begin_fill()
turtle.fillcolor("yellow")
turtle.pencolor("yellow")
for x in range(5):
    turtle.forward(38.0417418)
    turtle.right(144)
turtle.end_fill()

# 写文字
turtle.up()
turtle.goto(0, -100)
turtle.pencolor('violet')
turtle.write('武汉加油，中国加油！', move=True, align='center', font=('华文新魏', 30, 'normal'))

# 隐藏画笔，绘画完成
turtle.hideturtle()
turtle.done()

效果图