实验8
实验任务3
from turtle import * def square(size=50, rgb='gold'): 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 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()
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 def move_to(a, b): penup() goto(a, b) pendown() def get_rgb(): """获取一个不重复的rgb三元组""" ls = [] rgb = tuple(random() for i in range(3)) while rgb in ls: rgb = tuple(random() for i in range(3)) ls.append(rgb) return rgb def draw_rectangle(): """画一个20*70的矩形""" begin_fill() rgb = get_rgb() color(rgb, rgb) for i in range(2): fd(20) left(90) fd(70) left(90) end_fill() setup(800, 600) speed(0) for i in range(20): move_to(-20*10+20*i, 0) draw_rectangle() ht() done()
实验总结
random()可以生成[0,1]之间的一个随机浮点数