Python画出红树林

以下是使用Python绘制红树林的代码演示：

import turtle

# 设置画布大小和起点坐标
turtle.setup(800, 800)
turtle.penup()
turtle.goto(-300, -250)
turtle.pendown()

# 绘制树干
turtle.left(90)
turtle.forward(200)
turtle.right(90)

# 绘制树枝
def draw_branch(branch_length):
    if branch_length > 10:
        # 绘制右侧树枝
        turtle.forward(branch_length)
        turtle.right(20)
        draw_branch(branch_length - 20)
        # 绘制左侧树枝
        turtle.left(40)
        draw_branch(branch_length - 20)
        turtle.right(20)
        # 返回原位置
        turtle.penup()
        turtle.backward(branch_length)
        turtle.pendown()

# 绘制树叶
def draw_leaf():
    turtle.fillcolor("green")
    turtle.begin_fill()
    turtle.circle(20)
    turtle.end_fill()

# 绘制红树林
def draw_mangrove_tree():
    turtle.pensize(6)
    turtle.color("brown")
    draw_branch(100)
    turtle.penup()
    turtle.goto(-200, -50)
    turtle.pendown()
    turtle.color("green")
    draw_leaf()
    turtle.penup()
    turtle.goto(-250, -100)
    turtle.pendown()
    draw_leaf()
    turtle.penup()
    turtle.goto(-150, -100)
    turtle.pendown()
    draw_leaf()
    turtle.penup()
    turtle.goto(-200, -150)
    turtle.pendown()
    draw_leaf()

draw_mangrove_tree()
turtle.done()

运行上述代码后，将会在画布上绘制出一棵红树林。