1.注意标准库的两种导入与使用方式,建议大家采用<库名>.<函数名>的方式。
2.对前面的代码进行优化,用for,while,if,def实现:
a.画五角星
import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.begin_fill()
for i in range(5):
turtle.forward(100)
turtle.right(144)
turtle.end_fill()
b.画同心圆
import turtle
turtle.shape('turtle')
for i in range(5):
turtle.up()
turtle.goto(0,-20*(i+1))
turtle.down()
turtle.circle(20*(i+1))
turtle.write(10-i)
c.画太阳花
from turtle import *
color('pink','green')
begin_fill()
while True:
forward(200)
left(150)
if(abs(pos()))<1:
break
end_fill()
done()
d.画五个角星
import turtle
turtle.setup(600,400,0,0)
turtle.color('yellow')
turtle.bgcolor('red')
turtle.fillcolor('yellow')
def mygoto(x,y):
turtle.up()
turtle.goto(x,y)
turtle.down()
mygoto(-250,75)
turtle.begin_fill()
for i in range(5):
turtle.forward(100)
turtle.right(144)
turtle.end_fill()
mygoto(-100,115)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()
mygoto(-50,85)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()
mygoto(-50,35)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()
mygoto(-100,0)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()