任何字符串都可以代表 turtle 中的 "backspace" 吗？

Question

import turtle as t
def erase():
     if t.xcor() > -300:
          t.goto(t.xcor()-5,t.ycor())
     else:
          prevline()
     t.color("white")
     t.begin_fill()
     box()
     t.end_fill()
     t.color("black")
def prevline():
     t.goto(300,t.ycor()+10)

t.Screen().onkey(erase,"_")

What would replace the "_" in the above code that would represent the backspace?

Answer 1

我相信 'BackSpace' 是您正在寻找的 tkinter keysym。

我会把你的示例代码写成这样：

from turtle import Screen, Turtle

def erase():
    if turtle.xcor() > -300:
        turtle.setx(turtle.xcor() - 5)
    else:
        prevline()

    turtle.color('white')
    turtle.begin_fill()
    box()
    turtle.end_fill()
    turtle.color('black')

def prevline():
    turtle.goto(300, turtle.ycor() + 10)

turtle = Turtle()

screen = Screen()
screen.onkey(erase, 'BackSpace')
screen.listen()
screen.mainloop()

虽然对角色进行白化很可能不尽如人意。我会考虑采用 undo() 或其他类似方法。

任何字符串都可以代表 turtle 中的 "backspace" 吗？

Can any string represent "backspace" in turtle?

python

turtle-graphics