用python画五棵樱花树和飘落的樱花

好的，下面是一份使用 Python 绘制五棵樱花树和飘落的樱花的代码：

import turtle
import random

# 画樱花的枝干
def draw_tree(branch_len):
    if branch_len > 10:
        # 随机画笔颜色
        turtle.pencolor('brown')
        # 设置画笔粗细
        turtle.pensize(branch_len / 10)
        # 向前画出枝干的长度
        turtle.forward(branch_len)
        # 随机角度
        angle = random.uniform(15, 45)
        # 向右旋转一定角度
        turtle.right(angle)
        # 递归画出右侧的枝干
        draw_tree(branch_len - random.uniform(10, 20))
        # 向左旋转一定角度
        turtle.left(angle * 2)
        # 递归画出左侧的枝干
        draw_tree(branch_len - random.uniform(10, 20))
        # 返回上一个节点
        turtle.right(angle)
        # 向后撤回画笔
        turtle.backward(branch_len)

# 画樱花
def draw_flower(petal_num):
    # 随机画笔颜色
    turtle.pencolor('pink')
    # 设置画笔粗细
    turtle.pensize(2)
    # 随机花瓣数量
    petals = petal_num + random.randint(-2, 2)
    # 随机花瓣大小
    petal_size = random.uniform(10, 20)
    # 绘制花瓣
    for _ in range(petals):
        turtle.forward(petal_size)
        turtle.right(360 / petals)
        turtle.circle(1)
        turtle.right(180 - 360 / petals)
        turtle.forward(petal_size)
        turtle.right(180 - 360 / petals)

# 飘落的樱花
def snow(num):
    # 随机画笔颜色
    turtle.pencolor('white')
    # 随机画笔粗细
    turtle.pensize(2)
    # 随机花瓣大小
    petal_size = random.uniform(10, 20)
    # 随机花瓣数量
    petals = random.randint(4, 8)
    # 绘制花瓣
    for _ in range(petals):
        turtle.forward(petal_size)
        turtle.right(360 / petals)
        turtle.circle(1)
        turtle.right(180 - 360 / petals)
        turtle.forward(petal_size)
        turtle.right(180 - 360 / petals)
    # 随机移动位置
    turtle.penup()
    x = random.uniform(-200, 200)
    y = random.uniform(200, 400)
    turtle.goto(x, y)
    turtle.pendown()
    # 随机飘落速度
    speed = random.uniform(5, 10)
    for i in range(num):
        turtle.right(random.uniform(-90, 90))
        turtle.forward(speed)

# 设置画布大小
turtle.setup(800, 600)
# 隐藏画笔
turtle.hideturtle()
# 加速绘制速度
turtle.tracer(100)
# 设置画笔起始位置
turtle.penup()
turtle.goto(0, -200)
turtle.pendown()
# 绘制五棵樱花树
for _ in range(5):
    draw_tree(100)
    turtle.penup()
    x = random.uniform(-300, 300)
    y = random.uniform(-200, -100)
    turtle.goto(x, y)
    turtle.pendown()
    draw_flower(8)
# 隐藏画笔
turtle.hideturtle()
# 绘制飘落的樱花
for i in range(200):
    snow(10)

# 点击关闭窗口
turtle.exitonclick()

运行以上代码，即可在画布上看到五棵樱花树和飘落的樱花效果。