NameError：名称“tk”未在对象类中定义

Question

我已经构建了一个应用，源码是这样开始的：

from tkinter import Text
from tkinter import Label    

from AESEncDec import *
from MD5Hashing import *
from RSAEncDec import *

color = 'lightblue' #color our background

class Application(Frame):

    def __init__(self, root=None):

        Frame.__init__(self, root)
        self.frame_width = 700
        self.frame_height = 400

但最后一段无法执行：

#create object TK class
the_window = Tk(className = " Cryptographic")
#create object Application
app = Application(the_window)
#run our Application
app.mainloop()

它给出了 NameError：

Traceback（最近一次调用最后一次）： 文件“/home/artur/Documents/MScProject/MSc Project/Task #179276/main_program.py”，第 169 行，在 the_window = Tk(className = "加密") NameError: 名称“Tk”未定义

在这种情况下我应该如何正确定义它？

Answer 1

您错过了一条导入语句：from tkinter import Tk

避免冲突的最佳方法是导入整个模块，最终使用别名使其简短（但不要忘记在您调用 tkinter 小部件的任何地方添加 tk.）：

import tkinter as tk

from AESEncDec import *
from MD5Hashing import *
from RSAEncDec import *

color = 'lightblue' #color our background

class Application(tk.Frame):

    def __init__(self, root=None):

        tk.Frame.__init__(self, root)
        self.frame_width = 700
        self.frame_height = 400


#create object TK class
the_window = tk.Tk(className = " Cryptographic")
#create object Application
app = Application(the_window)
#run our Application
app.mainloop()