如何实现上图效果呢？让我们开始吧！
首先，导入turtle和random
from turtle import *
import random as rd然后，写一个待会儿要用到的函数，用于随机生成True和False
def true_or_false(percent=50):n=rd.randint(1,100)if n<=percent:return Trueelse:return False然后初始化一下，设置颜色模式为255（RGB模式），设置画布，初始位置，绘图速度等
# initial
colormode(255)
screensize(600,600,"darkblue")
seth(90)
pu()
bk(180)
speed(0)
tracer(2)一些常量
# constants
BROWN=160,82,45
TRUNK_LENGTH=350
TRUNK_PENSIZE=15
DECORATE_BALL_PENSIZE=4
DECORATE_COLORS=[(200,0,0),(220,220,0),(255,97,3)
]树干
# trunk
pu()
seth(90)
xx=0
goto(xx,-180)
pd()
pensize(TRUNK_PENSIZE)
pencolor(BROWN)
fd(TRUNK_LENGTH)
bk(TRUNK_LENGTH)两边的叶子，左边的叶子朝向右边（随机度数），右边的叶子朝向左边（随机度数），这段代码不难理解
# leaf
pu()
x,y=pos()for n in range(18): # leftseth(90)if n==0:fd(100)else:fd(20)seth(180)length=200-n*10fd(length)seth(0)for i in range(length):fd(1)if i%6==0:pd()seth(rd.randint(45,75))pencolor((0,rd.randint(110,180),0) if true_or_false(80) else (255,255,255))pensize(10)fd(30)bk(30)seth(0)pu()pu()
goto(x,y)
for n in range(19): # rightseth(90)if n==0:fd(100)else:fd(20)seth(0)length=200-n*10fd(length)seth(280)for i in range(length):fd(1)if i%6==0:pd()seth(rd.randint(105,135))pencolor((0,rd.randint(110,180),0) if true_or_false(80) else (255,255,255))pensize(10)fd(30)bk(30)seth(180)pu()伯利恒之星，一开始画位置不太对，经过多次调整后确定为如下代码
# star
pu()
goto(xx,pos()[1])
seth(180)
fd(20) # micro moving
seth(90)
fd(20) # micro movingpd()
color((255,0,0))
seth(72)
begin_fill()
for i in range(5):fd(80)right(180-180/5)
end_fill()一些装饰
# ball (decorate)
positions=[(-159,-55),(-91,14),(-83,-36),(85,-54),(-22,-40),(-3,34),(0,160),(-47,152),(19,215),(115,22),(68,107),(141,-48)]
pensize(DECORATE_BALL_PENSIZE)
for x,y in positions:pu()goto(x,y)r=rd.randint(12,22)seth(90)fd(r)seth(0)fillcolor(rd.choice(DECORATE_COLORS))pencolor(rd.choice(DECORATE_COLORS))pd()begin_fill()circle(r)end_fill()DONE！！
done()好啦，看一看全部代码吧！
from turtle import *
import random as rddef true_or_false(percent=50):n=rd.randint(1,100)if n<=percent:return Trueelse:return False# initial
colormode(255)
screensize(600,600,"darkblue")
seth(90)
pu()
bk(180)
speed(0)
tracer(2)# constants
BROWN=160,82,45
TRUNK_LENGTH=350
TRUNK_PENSIZE=15
DECORATE_BALL_PENSIZE=4
DECORATE_COLORS=[(200,0,0),(220,220,0),(255,97,3)
]# trunk
pu()
seth(90)
xx=0
goto(xx,-180)
pd()
pensize(TRUNK_PENSIZE)
pencolor(BROWN)
fd(TRUNK_LENGTH)
bk(TRUNK_LENGTH)# leaf
pu()
x,y=pos()for n in range(18): # leftseth(90)if n==0:fd(100)else:fd(20)seth(180)length=200-n*10fd(length)seth(0)for i in range(length):fd(1)if i%6==0:pd()seth(rd.randint(45,75))pencolor((0,rd.randint(110,180),0) if true_or_false(80) else (255,255,255))pensize(10)fd(30)bk(30)seth(0)pu()pu()
goto(x,y)
for n in range(19): # rightseth(90)if n==0:fd(100)else:fd(20)seth(0)length=200-n*10fd(length)seth(280)for i in range(length):fd(1)if i%6==0:pd()seth(rd.randint(105,135))pencolor((0,rd.randint(110,180),0) if true_or_false(80) else (255,255,255))pensize(10)fd(30)bk(30)seth(180)pu()# star
pu()
goto(xx,pos()[1])
seth(180)
fd(20) # micro moving
seth(90)
fd(20) # micro movingpd()
color((255,0,0))
seth(72)
begin_fill()
for i in range(5):fd(80)right(180-180/5)
end_fill()# ball (decorate)
positions=[(-159,-55),(-91,14),(-83,-36),(85,-54),(-22,-40),(-3,34),(0,160),(-47,152),(19,215),(115,22),(68,107),(141,-48)]
pensize(DECORATE_BALL_PENSIZE)
for x,y in positions:pu()goto(x,y)r=rd.randint(12,22)seth(90)fd(r)seth(0)fillcolor(rd.choice(DECORATE_COLORS))pencolor(rd.choice(DECORATE_COLORS))pd()begin_fill()circle(r)end_fill()done()
里面的参数可以自己修改，喜欢的话就来个3连吧~~~
