Python语言自学day01
小程序练习:
1、根据半径r计算圆面积
>>> r = 25
>>> area = 3.1415 * r * r
>>> print("{:.2f}".format(area))
1963.44
>>> print(area)
1963.4375000000002
2、同切圆的绘制
>>> import turtle
>>> turtle.pensize(2)
>>> turtle.circle(10)
>>> turtle.circle(40)
>>> turtle.circle(80)
>>> turtle.circle(160)
3、五角星的绘制
>>> from turtle import *
>>> color('red','red')
>>> begin_fill()
>>> for i in range(5):
fd(200)
rt(144)
>>> end_fill()
同切圆的绘制效果如下
五角星的绘制效果如下