Tkinter 问题 - 未定义名称框架 [英] Tkinter troubles - Name frame is not defined

问题描述

import Tkinter

class Application(Frame):
    def __init__(self, master):
        Frame.__init__(self,master)
        self.grid()
        self.CreateWidgets()
    def CreateWidgets(self):
        self.LoginButton = Button(Self)
        self.LoginButton["text"] = "Login"
        self.LoginButton.grid()
        self.QUIT_Button = Button(self)
        self.QUIT_Button["text"] = "Quit"
        self.QUIT_Button["command"] = self.quit
        self.QUIT_Button["fg"] = "red"

root = Tk()
root.title("Login")
root.geometry("500x500")
app = Application(root)
root.mainloop()

这是我一直在关注的 youtube 教程:https://www.youtube.com/watch?v=YCLTv6wh3jE&index=39&list=PLB0701884E5AE1B45

This is the youtube tutorial that I have been following: https://www.youtube.com/watch?v=YCLTv6wh3jE&index=39&list=PLB0701884E5AE1B45

这是不断发生的错误:

Traceback (most recent call last):
  File "C:\Users\omer\Desktop\test.py", line 3, in <module>
    class Application(Frame):
NameError: name 'Frame' is not defined

我是 Python 的完全菜鸟，并且仍在学习中，因此我们将不胜感激.

I am a complete noob at Python and am still learning so any help would be appreciated.

推荐答案

Frame Tk 和 Button 都位于Tkinter 命名空间.因此，您必须限定它们以让 Python 知道它们的位置¹:

Frame Tk, and Button are all located in the Tkinter namespace. Thus, you have to qualify them to let Python know where they are¹:

import Tkinter

class Application(Tkinter.Frame):
...
        Tkinter.Frame.__init__(self, master)
...
        self.LoginButton = Tkinter.Button(self)
...
        self.QUIT_Button = Tkinter.Button(self)
...

root = Tkinter.Tk()

那个，或者你可以直接导入名称:

That, or you could just import the names directly:

from Tkinter import Frame, Tk, Button

<小时>

¹如果您决定使用第一个解决方案，最好像这样导入 Tkinter:

---

¹If you decide to use this first solution, it would probably be best to import Tkinter like this:

import Tkinter as tk

这样，代码就变成这样了:

That way, the code becomes this:

import Tkinter as tk

class Application(Tkinter.Frame):
...
        tk.Frame.__init__(self, master)
...
        self.LoginButton = tk.Button(self)
...
        self.QUIT_Button = tk.Button(self)
...

root = tk.Tk()

这要简洁得多.

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