Python Turtle 中的箭头命令

Question

我一直在尝试使用画布功能将海龟放入 tkinter。我希望能够制作一个海龟蚀刻素描器，这样我就可以用箭头键控制海龟。我似乎无法让它工作并且不理解它吐出的错误：NameError: name 'Screen' is not defined这是我的代码：import tkinter as tkimport turtlewindow = tk.Tk()window.geometry("750x500")window.resizable(0,0)app = tk.Canvas(master = window,                width = 500,                height = 500,                bg = "white")app.pack()Screen()turtle = turtle.RawTurtle(app)turtle = turtle.Screen()def k1():    move.forward(1)def k2():    move.left(1)def k3():    move.right(1)def k4():    move.back(1)turtle.onkey(k1, "Up")turtle.onkey(k2, "Left")turtle.onkey(k3, "Right")turtle.onkey(k4, "Down")turtle.listen()window.mainloop()

Answer 1

你必须使用

turtle.Screen()

代替

Screen()

但我看到代码的其他问题。 当按下键时，我会使用tkinter方法来执行功能。bind()

import tkinter as tk

import turtle

# --- functions ---

def k1(event):

    t.forward(1)

def k2(event):

    t.left(1)

def k3(event):

    t.right(1)

def k4(event):

    t.back(1)

# --- main ---

window = tk.Tk()

window.geometry("750x500")

window.resizable(False, False)

canvas = tk.Canvas(master=window, width=500, height=500, bg="white")

canvas.pack()

t = turtle.RawTurtle(canvas)

window.bind("<Up>", k1)

window.bind("<Left>", k2)

window.bind("<Right>", k3)

window.bind("<Down>", k4)

window.mainloop()

Answer 2

就像你使用RawTurtleinstead of一样Turtle，当你使用嵌入在 tkinter 窗口中的 turtle 时，如果你想要它提供的方法，你需要使用TurtleScreeninstead of ：Screen

import tkinter as tk

from turtle import TurtleScreen, RawTurtle

window = tk.Tk()

window.geometry("750x500")

window.resizable(0, 0)

canvas = tk.Canvas(master=window, width=500, height=500)

canvas.pack()

screen = TurtleScreen(canvas)

turtle = RawTurtle(screen)

def k1():

    turtle.forward(1)

def k2():

    turtle.left(1)

def k3():

    turtle.right(1)

def k4():

    turtle.back(1)

screen.onkey(k1, "Up")

screen.onkey(k2, "Left")

screen.onkey(k3, "Right")

screen.onkey(k4, "Down")

screen.listen()

screen.mainloop()

在这种情况下不要使用独立的海龟Screen，因为它可能会创建第二个 tkinter 根窗口，从而导致稍后出现细微的错误（例如图像未加载。）