【MOOC嵩天Python語言程序設計】1.2 Python開發環境配置 實例

實例1：圓面積的計算

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

1963.4375000000002
1963.44

實例2：同切圓繪製

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

實例3：五角星繪製

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