对象没有属性列表框

Question

我正在创建词汇表，一个GUI程序来管理未知单词。我得到：

/usr/bin/python3。5/主页/cali/Pycharm项目/词汇表/词汇表。Tkinter回调回溯中的py异常（最近一次调用最后一次）：
html" target="_blank">文件“/usr/lib/python3.5/Tkinter/init.py”，第1553行，在调用返回self中。func（*args）文件“/home/cali/PycharmProjects/词汇表/词汇表.py”，第86行，添加项self。列表框。插入（END，self.get_word（））AttributeError:“词汇表”对象没有属性“listBox”

进程已完成，退出代码为0

...当我尝试向列表框添加项目时。

以下是我所做的：

#!/usr/bin/env python

# Vocabulary.py
#   GUI program to manage unknown words

from tkinter import *

class Word:

    def __init__(self, wordorphrase, explanation, translation, example):
        self.wordorphrase = wordorphrase
        self.explanation = explanation
        self.translation = translation
        self.example = example

class Vocabulary(Frame):

    def __init__(self, master):
        Frame.__init__(self, master)
        self.master = master
        self.master.resizable(width = False, height = False)
        self.master.title("Vocabulary")
        self.create_widgets()

    def create_widgets(self):

        lblWordsOrPhrases = Label(self.master, text = 'Words or Phrases:')
        lblWordsOrPhrases.grid(row = 0, column = 0)

        lblWordOrPhrase = Label(self.master, text = 'Word or phrase:')
        lblWordOrPhrase.grid(row = 0, column = 1, sticky = W)

        listBox = Listbox(self.master,
                          height = 34,
                          width = 30)
        listBox.grid(row = 1, column = 0, rowspan = 7)

        txt_WordOrPhrase = Text(self.master,
                                height = 1,
                                width = 40)
        txt_WordOrPhrase.grid(row = 1, column = 1, sticky = N)

        lblExplanation = Label(self.master, text = 'Explanation:')
        lblExplanation.grid(row = 2, column = 1, sticky = W)

        txt_Explanation = Text(self.master,
                               height = 10,
                               width = 40)
        txt_Explanation.grid(row = 3, column = 1, sticky = N)

        lblTranslation = Label(self.master, text = 'Translation:')
        lblTranslation.grid(row = 4, column = 1, sticky = W)

        txt_Explanation = Text(self.master,
                               height = 10,
                               width = 40)
        txt_Explanation.grid(row = 5, column = 1, sticky = N)


        lblExamples = Label(self.master, text = 'Example(s):')
        lblExamples.grid(row = 6, column = 1, sticky = W)

        txt_Explanation = Text(self.master,
                               height = 10,
                               width = 40)
        txt_Explanation.grid(row = 7, column = 1, sticky = S)

        btn_Add = Button(self.master,
                         text = 'Add',
                         command = self.add_item)
        btn_Add.grid(row = 8, column = 0, sticky = W)

    def get_word(self):
        return self.txt_WordOrPhrase.get('1.0', '1.0 lineend')

    def get_explanation(self):
        return self.txt_Explanation.get('1.0', '1.0 lineend')

    def get_translation(self):
        return self.txt_Translation.get('1.0', '1.0 lineend')

    def get_example(self):
        return self.txt_Example.get('1.0', '1.0 lineend')

    def add_item(self):
        self.listBox.insert(END, self.get_word())

def main():
    root = Tk()
    Vocabulary(root)
    root.mainloop()

if __name__ == '__main__':
    main()

我正在使用Python 3.5。

Answer 1

你listbox是create_widgets的本地变量，因为它不是用自己设置的。为了使变量在实例范围内可用，您需要将其包含在Self中。

将create_widgets中的行更改为self。listBox=listBox（self.master，高度=34，宽度=30）并将每个对listBox的引用更改为self。列表框以应用此更改。

您可能需要在__init__（）中定义self.listBox，因为它可能有助于跟踪实例变量。