实验8 Python库应用编程与体验
task3
1 from turtle import * 2 3 def square(size=50, rgb='orange'): 4 '''绘制正方形 5 参数size指定边长 6 参数rgb指定画笔颜色 7 如果没有给参数,采用默认值 8 ''' 9 pencolor(rgb) 10 for i in range(4): 11 fd(size) 12 left(90) 13 14 15 def main(): 16 setup(800, 600) 17 speed(0) 18 19 n = 10 20 for i in range(n): 21 square(80) 22 left(360/n) 23 24 hideturtle() 25 done() 26 27 28 if __name__ == '__main__': 29 main()
task 4
1 from turtle import * 2 3 setup(800, 600) 4 pencolor('pink') 5 6 n = 10 7 for i in range(n): 8 # 绘制一片花瓣 9 for j in range(2): 10 circle(80, 90) 11 left(90) 12 13 right(360/n) 14 15 hideturtle() 16 done()
task 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()
task 6
1 from turtle import * 2 from random import random 3 4 def move_to(a, b): 5 penup() 6 goto(a, b) 7 pendown() 8 9 def get_rgb(): 10 list = [] 11 rgb = tuple(random() for i in range(3)) 12 while rgb in list: 13 rgb = tuple(random() for i in range(3)) 14 list.append(rgb) 15 return rgb 16 17 def draw_rectangle(): 18 begin_fill() 19 rgb = get_rgb() 20 color(rgb, rgb) 21 for i in range(2): 22 fd(20) 23 left(90) 24 fd(70) 25 left(90) 26 end_fill() 27 28 setup(800, 600) 29 speed(0) 30 31 for i in range(20): 32 move_to(-20*10+20*i, 0) 33 draw_rectangle() 34 35 hideturtle() 36 done()