圣诞将至：python3几行代码教你写出圣诞树。

# -----文件描述脚本------
# creatorName : 'ZiChen_Jiang'
# fileName : 'Christmas-python'
# createTime : '2021/12/20 09:24'
# Project introduction : 'Python3.9 构建的圣诞树解释文件'
# 执行命令 : python3 main.py
# ------文件描述脚本------

# 版本一
import turtle
screen = turtle.Screen()
screen.setup(800,600)
circle = turtle.Turtle()
circle.shape('circle')
circle.color('red')
circle.speed('fastest')
circle.up()
square = turtle.Turtle()
square.shape('square')
square.color('green')
square.speed('fastest')
square.up()
circle.goto(0,280)
circle.stamp()
k = 0
for i in range(1, 17):
    y = 30*i
    for j in range(i-k):
        x = 30*j
        square.goto(x,-y+280)
        square.stamp()
        square.goto(-x,-y+280)
        square.stamp()
    if i % 4 == 0:
        x = 30*(j+1)
        circle.color('red')
        circle.goto(-x,-y+280)
        circle.stamp()
        circle.goto(x,-y+280)
        circle.stamp()
        k += 2
    if i % 4 == 3:
        x = 30*(j+1)
        circle.color('yellow')
        circle.goto(-x,-y+280)
        circle.stamp()
        circle.goto(x,-y+280)
        circle.stamp()
square.color('brown')
for i in range(17,20):
    y = 30*i
    for j in range(3):
        x = 30*j
        square.goto(x,-y+280)
        square.stamp()
        square.goto(-x,-y+280)
        square.stamp()
turtle.exitonclick()


# 版本二
# from turtle import *
# import random
# import time
#
# n = 80.0
#
# speed("fastest")
# screensize(bg='seashell')
# left(90)
# forward(3*n)
# color("orange", "yellow")
# begin_fill()
# left(126)
#
# for i in range(5):
#     forward(n/5)
#     right(144)
#     forward(n/5)
#     left(72)
# end_fill()
# right(126)
#
# color("dark green")
# backward(n*4.8)
# def tree(d, s):
#     if d <= 0: return
#     forward(s)
#     tree(d-1, s*.8)
#     right(120)
#     tree(d-3, s*.5)
#     right(120)
#     tree(d-3, s*.5)
#     right(120)
#     backward(s)
# tree(15, n)
# backward(n/2)
#
# for i in range(200):
#     a = 200 - 400 * random.random()
#     b = 10 - 20 * random.random()
#     up()
#     forward(b)
#     left(90)
#     forward(a)
#     down()
#     if random.randint(0, 1) == 0:
#             color('tomato')
#     else:
#         color('wheat')
#     circle(2)
#     up()
#     backward(a)
#     right(90)
#     backward(b)
# time.sleep(60)