importturtleasTimportrandomimporttime#=======画樱花的躯干(60,t)===============T.title('凋落的樱花')
defTree(branch, t):
time.sleep(0.0005)
ifbranch>3:
if8<=branch<=12:
ifrandom.randint(0, 2) ==0:
t.color('snow')  # 白else:
t.color('lightcoral')  # 淡珊瑚色t.pensize(branch/3)
elifbranch<8:
ifrandom.randint(0, 1) ==0:
t.color('snow')
else:
t.color('lightcoral')  # 淡珊瑚色t.pensize(branch/2)
else:
t.color('sienna')  # 赭(zhě)色t.pensize(branch/10)  # 6t.forward(branch)
a=1.5*random.random()
t.right(20*a)
b=1.5*random.random()
Tree(branch-10*b, t)
t.left(40*a)
Tree(branch-10*b, t)
t.right(20*a)
t.up()
t.backward(branch)
t.down()
#=============掉落的花瓣===================defPetal(m, t):
foriinrange(m):
a=200-400*random.random()
b=10-20*random.random()
t.up()
t.forward(b)
t.left(90)
t.forward(a)
t.down()
t.color('lightcoral')  # 淡珊瑚色t.circle(1)
t.up()
t.backward(a)
t.right(90)
t.backward(b)
#=======绘图区域============t=T.Turtle()
# 画布大小w=T.Screen()
t.hideturtle()  # 隐藏画笔t.getscreen().tracer(5, 0)
w.screensize(bg='wheat')  # wheat小麦t.left(90)
t.up()
t.backward(150)
t.down()
t.color('sienna')
#=====画樱花的躯干===========Tree(60, t)
# 掉落的花瓣Petal(200, t)
w.exitonclick()