实验8 Python库应用编程与体验

实验任务3

from turtle import *

def square(size=50, rgb=(0.86,0.6,0)):
    '''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()

 

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()

 

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(5):
        fd(size)
        angle += 72
        seth(angle)
        size += 5

hideturtle()
done()

 

实验任务6

from turtle import *
from random import random

setup(800, 600)


def rect(a=10, b=30, rgb=''):
    color(rgb)
    begin_fill()
    fd(a)
    left(90)
    fd(b)
    left(90)
    fd(a)
    left(90)
    fd(b)
    left(90)
    end_fill()


penup()
goto(-200, 0)
pendown()

for i in range(20):
    rgb = tuple(random() for j in range(3))
    rect(20, 60, rgb)
    fd(20)

hideturtle()
done()