实验8

实验任务3
from turtle import*

def square(size=50,rgb='pink'):
    pencolor(rgb)
    for i in range(4):
        fd(size)
        left(90)

def main():
    setup(800,600)
    speed(0)

    n=10
    for i in range(n):
        square(80,'orange')
        left(360/n)

    hideturtle()
    done()

if __name__=='__main__':
    main()

实验任务4
from turtle import*

setup(800,600)
pencolor('red')

n=10
for i in range(n):
    for j in range(2):
        circle(80,90)
        left(90)

    right(360/n)
hideturtle()
done()

实验任务5
from turtle import*

setup(800,600)
bgcolor('black')
pencolor('yellow')
speed(0)

angle=0
size=2

n=8
for i in range(n):
    for j in range(5):
        fd(size)
        angle+=72
        seth(angle)
        size+=5

hideturtle()
done()

实验任务6
from turtle import*
from random import random
def moveto(x,y):
    penup()
    goto(x,y)
    pendown()

setup(800,600)
def rect(wide,height,rgb='red'):
    rgb=tuple(random() for i in range(3))
    color(rgb)
    for i in range(2):
        begin_fill()
        fd(wide)
        left(90)
        fd(height)
        end_fill()
        left(90)
wide=10
for i in range(20):
    moveto((9-i)*wide,0)
    rect(10,20)
hideturtle()
done()

此次实验，我主要通过实验任务6初步学习了turtle作图的方法，但是还很不熟练，以后要多加练习。