圣诞节的python豪华版圣诞树，包括雪花彩灯文字背景

import turtle as t
from turtle import *
import random as r
import time
n = 100.0
t.delay(0)
speed("fastest")
screensize(bg='black')
def bgpic(self, picname=None):

if picname is None:
    return self._bgpicname
if picname not in self._bgpics:
    self._bgpics[picname] = self._image(picname)
self._setbgpic(self._bgpic, self._bgpics[picname])
self._bgpicname = picname

if name == '__main__':

myWin = t.Screen()
t.setup(width=600, height=750, startx=0, starty=0)
t.bgpic('图片地址')  # 这里设置本地图片地址，建议是gif图片

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)
def drawlight():

if r.randint(0, 50) == 0:#如果觉得彩灯太多，可以把取值范围加大一些，对应的灯就会少一些
    color('tomato')
    begin_fill()
    circle(6)
    end_fill()
elif r.randint(0,50) == 1:
    color('orange')
    begin_fill()
    circle(3)
    end_fill()
elif r.randint(0,50) == 2:
    color('pink')
    begin_fill()
    circle(2)
    end_fill()
else:
    pensize(5)
    color('green')

pensize(5)
color("dark green")
backward(n*5)
def tree(d, s):

if d <= 0: return
forward(s)
tree(d-1, s*.8)
right(120)
tree(d-3, s*.5)
drawlight()#同时画小彩灯
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 * r.random()
b = 10 - 20 * r.random()
up()
forward(b)
left(90)
forward(a)
down()
if r.randint(0, 1) == 0:
    pensize(1)
    color('tomato')
else:
    pensize(1)
    color('wheat')
circle(2)
up()
backward(a)
right(90)
backward(b)

t.color("dark red","red")
t.write("Merry Christmas",align ="center",font=("Comic Sans MS",30,"bold"))#写字
penup()
left(180)
backward(50)
pendown()
t.write("To Mr.Chen",align ="center",font=("Comic Sans MS",30,"bold"))#写字
def drawsnow():

t.ht()  #隐藏笔头，ht=hideturtle
t.pensize(2)  #定义笔头大小
for i in range(200): #画多少雪花
    t.pencolor("white") #定义画笔颜色为白色，其实就是雪花为白色
    t.pu() #[股票代码](https://www.gendan5.com/topic/lcSearch.html)提笔，pu=penup
    t.setx(r.randint(-350,350)) #定义x坐标，随机从-350到350之间选择
    t.sety(r.randint(-100,350)) #定义y坐标，注意雪花一般在地上不会落下，所以定义是从1开始
    t.pd() #落笔，pd=pendown
    dens = 6 #雪花瓣数设为6
    snowsize = r.randint(1,10) #定义雪花大小
    for j in range(dens): #就是6，那就是画5次，也就是一个雪花五角星
        #t.forward(int(snowsize))  #int（）取整数
        t.fd(int(snowsize))
        t.backward(int(snowsize))
        #t.bd(int(snowsize))  #注意没有bd=backward，但有fd=forward，小bug
        t.right(int(360/dens))  #转动角度

drawsnow()#画雪花
t.done() # 完成,否则会直接关闭

time.sleep(60)