如何用代码画出一幅好看的画

import random

import turtle

from turtle import *

t = turtle.Turtle()

w = turtle.Screen()

def tree(branchLen, t):

    if branchLen > 3:

        if 8 <= branchLen <= 12:

            if random.randint(0, 2) == 0:

                t.color('snow')

            else:

                t.color('lightcoral')

            t.pensize(branchLen / 3)

        elif branchLen < 8:

            if random.randint(0, 1) == 0:

                t.color('snow')

            else:

                t.color('lightcoral')

            t.pensize(branchLen / 2)

        else:

            t.color('sienna')

            t.pensize(branchLen / 10)

        t.forward(branchLen)

        a = 1.5 * random.random()

        t.right(20 * a)

        b = 1.5 * random.random()

        tree(branchLen - 10 * b, t)

        t.left(40 * a)

        tree(branchLen - 10 * b, t)

        t.right(20 * a)

        t.up()

        t.backward(branchLen)

        t.down()

def petal(m, t):  # 树下花瓣

    for i in range(m):

        a = 跟单网gendan5.com200 - 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)

def main():

    t = turtle.Turtle()

    myWin = turtle.Screen()

    getscreen().tracer(5, 0)

    turtle.screensize(bg='wheat')

    t.left(90)

    t.up()

    t.backward(150)

    t.down()

    t.color('sienna')

    tree(60, t)

    petal(100, t)

    myWin.exitonclick()

if __name__ == '__main__':

    main()