实验8

from turtle import *

def square(size=50, rgb='pink'):
    '''绘制正方形
    参数size指定边长
    参数rgb指定画笔颜色
    如果没有给参数，采用默认值
    '''
    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)
        left(360/n)

    hideturtle()
    done()


if __name__ == '__main__':
    main()

 

 

from turtle import *

setup(800, 600)
pencolor('pink')
n = 10
speed(0)

for i in range(n):
     # 绘制一片花瓣
     for j in range(2):
         circle(80, 90)
         left(90)
     right(360/n)

hideturtle()
done()

 

 

from turtle import *
setup(800, 600)
bgcolor('black')
pencolor('white')
speed(0)
angle = 0
size = 2
n = 10
for i in range(n):
    for j in range(4):
        fd(size)
        angle += 72
        seth(angle)
        size += 5
hideturtle()
done()

 

 

from turtle import *
from random import random
setup(800, 600)
speed(0)

def rect(w, h, fc):
    fillcolor(fc)
    for i in range(1, 5):
        if i % 2 == 1:
            d = w
        else:
            d = h
        fd(d)
        left(90)
def moveto(x, y):
    penup()
    goto(x, y)
    pendown()

for i in range(10):
    moveto(20 * i, 0)
    rgb = tuple(random() for i in range(3))
    begin_fill()
    rect(20, 50, rgb)
    end_fill()
for i in range(10):
    moveto(-20 * i, 0)
    rgb = tuple(random() for i in range(3))
    begin_fill()
    rect(20, 50, rgb)
    end_fill()

hideturtle()
done()