Python调用turtle库画彩色樱花树

可以使用以下代码实现：

import turtle
import random

# 设置画布大小和背景颜色
canvas = turtle.Screen()
canvas.bgcolor("white")
canvas.setup(width=800, height=600)

# 定义画笔
pen = turtle.Turtle()
pen.speed(0)
pen.ht()
pen.up()

# 定义花瓣颜色列表
colors = ["pink", "lightpink", "deeppink", "hotpink", "palevioletred", "mediumvioletred"]

# 画樱花树
def draw_tree(branch_len):
    if branch_len > 0:
        if branch_len < 20:
            # 画花瓣
            pen.color(random.choice(colors))
            pen.dot(random.randint(6, 10))
        pen.forward(branch_len)
        pen.right(20)
        draw_tree(branch_len - 10)
        pen.left(40)
        draw_tree(branch_len - 10)
        pen.right(20)
        pen.backward(branch_len)

# 设置起始位置和角度
pen.goto(0, -250)
pen.left(90)

# 画树干
pen.pensize(10)
pen.color("brown")
pen.down()
pen.forward(100)

# 画树枝
draw_tree(60)

# 关闭画布
canvas.exitonclick()

运行结果：