import turtle as T
import random
import time

#画樱花的躯干(60,t)
def Tree(branch,t):
    time.sleep(0.0005)
    if branch > 3:
        if 8 <= branch <= 12:
            if random.randint(0,2) == 0:
                t.color('snow')#白
            else:
                t.color('lightcoral')#淡珊瑚色
            t.pensize(branch/3)
        elif branch < 8:
            if random.randint(0,1) == 0:
                t.color('snow')
            else:
                t.color('lightcoral')
            t.pensize(branch/2)
        else :
            t.color('sienna')
            t.pensize(branch/10)
        t.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
def Petal(m,t):
    for i in range(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')
        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')
t.left(90)
t.up()
t.backward(150)
t.down()
t.color('sienna')

#写字
t.color('purple')
t.write('哈哈',font=("name",30,"normal"))

#画樱花的躯干
Tree(60,t)
#掉落的花瓣
Petal(200,t)
w.exitonclick()
        
