用Python写一个代码用于画一朵玫瑰花

以下是用Python代码实现画一朵玫瑰花的例子：

import turtle

# 设置画布大小和背景颜色
turtle.setup(600, 600)
turtle.bgcolor("black")

# 画玫瑰花
turtle.color("red")
turtle.speed(0)

for i in range(200):
    turtle.right(1)
    turtle.forward(2)

turtle.right(150)

for i in range(200):
    turtle.right(1)
    turtle.forward(2)

turtle.penup()
turtle.goto(0, -150)
turtle.pendown()

turtle.color("green")
turtle.speed(0)

# 画叶子
turtle.right(140)
turtle.forward(100)

for i in range(20):
    turtle.left(1)
    turtle.forward(2)

turtle.right(60)

for i in range(20):
    turtle.left(1)
    turtle.forward(2)

turtle.right(60)

for i in range(20):
    turtle.left(1)
    turtle.forward(2)

turtle.right(60)

for i in range(20):
    turtle.left(1)
    turtle.forward(2)

turtle.right(60)

for i in range(20):
    turtle.left(1)
    turtle.forward(2)

turtle.right(60)
turtle.forward(100)

# 关闭画笔
turtle.done()

运行以上代码，将会显示一朵红色的玫瑰花和绿色的叶子。可以根据需要调整颜色、大小和形状等参数。