TkInter 错误:没有显示名称和 $DISPLAY 环境变量 [英] TkInter error: no display name and no $DISPLAY environment variable

问题描述

我正在 Repl.it 上开发 TkInter，但遇到了问题，这是我的代码:

I'm working on TkInter on Repl.it and have run into a problem, this is my code:

from tkinter import *
import tkinter as tk

root = tk.Tk()
root.geometry('400x400')

我遇到了这个错误:

Traceback (most recent call last):
  File "main.py", line 4, in <module>
    root = tk.Tk()
  File "/usr/local/lib/python3.7/tkinter/__init__.py", line 202
3, in __init__
    self.tk = _tkinter.create(screenName, baseName, className,
interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment
variable

我该如何解决这个问题?

How do I solve this?

推荐答案

您显然是在尝试使用 repl.it 的Python"来做到这一点，它不支持 tkinter 需要的显示.他们确实提供了一个单独的Tkinter"选项，尽管它在语言列表中很远.这是一个快捷方式:https://repl.it/languages/tkinter

You're apparently trying to do this with repl.it's "Python", which doesn't support the display that tkinter needs. They do offer a separate "Tkinter" option, although it's quite far down the list of languages. Here's a shortcut: https://repl.it/languages/tkinter

你不会得到那个错误.为了实际显示窗口，您还必须在当前代码下添加:

There you don't get that error. In order to actually get the window shown, you'll have to also add this under your current code:

root.mainloop()

演示

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