条件、循环、函数定义 练习

1、画五角星

import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.bgcolor('red')

turtle.begin_fill()

for i in range(5):
    turtle.forward(100)
    turtle.right(144)

turtle.end_fill()

2、画同心圆

import turtle
turtle.color('yellow')
turtle.fillcolor('red')
turtle.bgcolor('black')

def pgoto(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()

turtle.begin_fill()

for i in range(10):
    pgoto(0,0-(20*i))
    turtle.circle(20*(i+1))
    turtle.write(10-i)

turtle.end_fill()

3、画太阳花

import turtle
turtle.color('yellow')
turtle.fillcolor('red')
turtle.bgcolor('black')

turtle.begin_fill()

while True:
    turtle.forward(200)
    turtle.left(170)
    if(abs(turtle.pos()))<1:
        break

turtle.end_fill()

 

4、画五个五角星

import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.bgcolor('red')
j=-250
k=-250

def pgoto(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()

def drawwujiao(r):
    for i in range(5):
        turtle.forward(r)
        turtle.right(144)

turtle.begin_fill()

for i in range(4):
    pgoto(j+(i*150),k+(i*150))
    drawwujiao(100)

turtle.end_fill()

turtle.begin_fill()

pgoto(-300,180)
drawwujiao(250)
    
turtle.end_fill()