Question

我正在尝试创建花朵，但是当我调用draw_petal(brad时，循环并没有形成。

我执行以下操作：

import turtle

def draw_petal(some_turtle):
    for i in range(1,3):
     some_turtle.forward(200)
     some_turtle.right(60)
     some_turtle.forward(200)
     some_turtle.right(120)


def draw_flower():
    window = turtle.Screen()
    window.bgcolor("yellow")

#create a turtle brad - draws a flower.

    brad = turtle.Turtle()
    brad.shape("turtle")
    brad.color("black")
    brad.speed(2)

    for i in range(1,37):
       draw_petal(brad)
       brad.right(10)

       window.exitonclick()

draw_flower()

我希望乌龟向右转10度并形成36次循环。

Answer 1

解决了。问题是window.exitonclick（）在for中循环。

能够解决您的问题真是太好了！像这样的乌龟程序的典型布局大致是：

from turtle import Screen, Turtle

def draw_petal(some_turtle):

    for _ in range(2):
        some_turtle.forward(200)
        some_turtle.right(60)
        some_turtle.forward(200)
        some_turtle.right(120)

def draw_flower():

    """ Create a turtle named brad; draw a flower. """

    brad = Turtle("turtle")
    brad.color("black")
    brad.speed('slow')

    for _ in range(36):
        draw_petal(brad)
        brad.right(10)

    brad.hideturtle()

window = Screen()
window.bgcolor("yellow")

draw_flower()

window.exitonclick()

为什么在调用draw_petal（brad）时不形成循环？

1 个答案: