import turtle as T
import random

# 繪制櫻花樹的函數(shù)，參數(shù)為樹枝長(zhǎng)度和繪圖海龜對(duì)象
def draw_tree(trunk_length, turtle_obj):
    if trunk_length > 3:
        # 根據(jù)樹枝長(zhǎng)度決定顏色和粗細(xì)
        if 8 <= trunk_length <= 12:
            color = 'snow' if random.randint(0, 1) == 0 else 'lightcoral'
            turtle_obj.pensize(trunk_length / 3)
        elif trunk_length < 8:
            color = 'snow' if random.randint(0, 1) == 0 else 'lightcoral'
            turtle_obj.pensize(trunk_length / 2)
        else:
            color = 'sienna'
            turtle_obj.pensize(trunk_length / 10)
        turtle_obj.color(color)  # 設(shè)置顏色
        turtle_obj.forward(trunk_length)  # 向前畫樹枝
        angle_a = 20 * random.random()  # 隨機(jī)角度a
        turtle_obj.right(angle_a)  # 向右轉(zhuǎn)
        branch_reduction = 10 * random.random()  # 隨機(jī)減少量
        draw_tree(trunk_length - branch_reduction, turtle_obj)  # 遞歸畫子樹枝
        turtle_obj.left(2 * angle_a)  # 向左轉(zhuǎn)
        draw_tree(trunk_length - branch_reduction, turtle_obj)  # 遞歸畫子樹枝
        turtle_obj.right(angle_a)  # 回轉(zhuǎn)角度a
        turtle_obj.penup()  # 提起筆
        turtle_obj.backward(trunk_length)  # 向后畫樹枝
        turtle_obj.pendown()  # 放下筆

# 繪制櫻花花瓣的函數(shù)，參數(shù)為花瓣數(shù)量和繪圖海龜對(duì)象
def draw_petals(petal_count, turtle_obj):
    for _ in range(petal_count):
        turtle_obj.penup()  # 提起筆
        distance = 200 - 400 * random.random()  # 隨機(jī)花瓣落下的距離
        turtle_obj.forward(distance)  # 向前移動(dòng)
        turtle_obj.left(90)  # 轉(zhuǎn)向
        turtle_obj.forward(10 - 20 * random.random())  # 隨機(jī)花瓣大小
        turtle_obj.down()  # 放下筆
        turtle_obj.color('lightcoral')  # 設(shè)置花瓣顏色
        turtle_obj.begin_fill()  # 開始填充顏色
        turtle_obj.circle(1)  # 畫一個(gè)圓形花瓣
        turtle_obj.end_fill()  # 結(jié)束填充顏色
        turtle_obj.penup()  # 提起筆
        turtle_obj.backward(distance)  # 向后移動(dòng)
        turtle_obj.right(90)  # 轉(zhuǎn)向

# 初始化繪圖環(huán)境
turtle_obj = T.Turtle()
turtle_screen = turtle_obj.getscreen()
turtle_screen.bgcolor("wheat")  # 設(shè)置背景顏色為小麥色
turtle_obj.hideturtle()  # 隱藏海龜圖標(biāo)
turtle_obj.speed(0)  # 設(shè)置繪制速度為最快
turtle_obj.left(90)  # 轉(zhuǎn)向
turtle_obj.penup()  # 提起筆
turtle_obj.backward(150)  # 向后移動(dòng)
turtle_obj.pendown()  # 放下筆
turtle_obj.color("sienna")  # 設(shè)置畫筆顏色為赭色

# 繪制櫻花樹和花瓣
draw_tree(60, turtle_obj)
draw_petals(200, turtle_obj)

# 點(diǎn)擊窗口關(guān)閉程序
turtle_screen.exitonclick()