源码

import turtle
import randomdef love(x,y):lv=turtle.Turtle()lv.hideturtle()lv.up()lv.goto(x,y)def curvemove():for i in range(20):lv.right(10)lv.forward(2)lv.color('red','pink')lv.speed(10000000)lv.pensize(1)lv.down()lv.begin_fill()lv.left(140)lv.forward(22)curvemove()lv.left(120)curvemove()lv.forward(22)lv.write("小花",font=("Arial",12,"normal"),align="center")#写上表白的人的名字lv.left(140)lv.end_fill()def tree(branchLen,t):if branchLen > 5:if branchLen<20:t.color("green")t.pensize(random.uniform((branchLen + 5) / 4 - 2, (branchLen + 6) / 4 + 5))t.down()t.forward(branchLen)love(t.xcor(),t.ycor())t.up()t.backward(branchLen)t.color("brown")returnt.pensize(random.uniform((branchLen+5)/4-2,(branchLen+6)/4+5))t.down()t.forward(branchLen)ang=random.uniform(15,45)t.right(ang)tree(branchLen-random.uniform(12,16),t)t.left(2*ang)tree(branchLen-random.uniform(12,16),t)t.right(ang)t.up()t.backward(branchLen)myWin = turtle.Screen()
t = turtle.Turtle()
t.hideturtle()
t.speed(1000)
t.left(90)
t.up()
t.backward(200)
t.down()
t.color("brown")
t.pensize(32)
t.forward(60)
tree(100,t)
myWin.exitonclick()

效果图