【MOOC嵩天Python语言程序设计】1.2 Python开发环境配置 实例

实例1：圆面积的计算

r = 25
area = 3.1415 * r * r
print(area)
print("{:.2f}".format(area))

1963.4375000000002
1963.44

实例2：同切圆绘制

import turtle
turtle. pensize(2)
turtle. circle(10)
turtle. circle(40)
turtle. circle(80)
turtle. circle(160)

实例3：五角星绘制

from turtle import *
color('red','red')
begin_fill()
for i in range(5):
    fd(200)
    rt(144)
end_fill()
done()