条件、循环、函数定义 练习

1.

import turtle
for i in range(5):
  turtle.forward(150)
  turtle.left(144)
  turtle.speed(10)

2.

import turtle
for i in range(5):
    turtle.up()
    turtle.goto(0,-20*(i+1))
    turtle.down()
    turtle.circle(20+20*(i+1))

3.

import turtle

turtle.fillcolor('blue')

turtle.begin_fill()
while True:
    turtle.forward(100)
    turtle.right(150)
    if(abs(turtle.pos()))<1:
       break
turtle.end_fill()

turtle.hideturtle()

4.

import turtle

turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.bgcolor('red')
def yf_goto(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()

yf_goto(-600,250)
turtle.begin_fill()
for i in range(5):
    turtle.forward(100)
    turtle.right(144)
turtle.end_fill()

yf_goto(-450,290)
turtle.begin_fill()
for i in range(5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()

yf_goto(-420,225)
turtle.begin_fill()
for i in range(5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()

yf_goto(-445,165)
turtle.begin_fill()
for i in range(5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()

yf_goto(-485,110)
turtle.begin_fill()
for i in range(5):
    turtle.forward(50)
    turtle.right(144)
turtle.end_fill()
turtle.hideturtle()