实验8 python库应用编程与体验

3.实验任务3

from turtle import *

def square(size=50, rgb='orange'):
    '''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()

4.实验任务4

from turtle import *

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

n = 10
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()

5.实验任务5

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()

6.实验任务6

from turtle import *
from random import random
shape('turtle')
def moveto(x,y):
    penup()
    goto(x,y)
    pendown()
i=0
while i<=9:
    speed(0)
    rgb = tuple( random() for i in range(3) )
    color(rgb)
    begin_fill()
    fd(10)
    left(90)
    fd(50)
    left(90)
    fd(10)
    left(90)
    fd(50)
    end_fill()
    left(90)
    fd(10)
    i+=1
moveto(-10,0)
i=0
while i<=9:
    #speed(0)
    rgb = tuple( random() for i in range(3) )
    color(rgb)
    begin_fill()
    fd(10)
    left(90)
    fd(50)
    left(90)
    fd(10)
    left(90)
    fd(50)
    end_fill()
    i+=1
    left(90)
    moveto(-10*(i+1),0)
hideturtle()
done()

实验总结：实验6完成的十分牵强