删除小部件(涉及 tkinter 模块) [英] Deleting widgets (involving tkinter module)

问题描述

这里的新人，我正在慢慢掌握 Python 的窍门，但我有一个问题.

new guy here and I'm slowly getting the hang of python, but I have a question.

我这里有两个文件

一个名为 first_file.py

one is named first_file.py

from other_file import GameFrame
from Tkinter import Tk

def main():
    tk = Tk()
    tk.title("Game of Life Simulator")
    tk.geometry("380x580")
    GameFrame(tk)
    tk.mainloop()
main()

另一个是other_file.py

and the other is other_file.py

from Tkinter import *
from tkFileDialog import *

class GameFrame (Frame):
    def __init__(self, root):
        Frame.__init__(self,root)
        self.grid()
        self.mychosenattribute=8 
        self.create_widgets()

    def create_widgets(self):
        for rows in range(1,21):
            for columns in range(1,21):
                self.columns = columns
                self.rows = rows
                self.cell = Button(self, text='X')
                self.cell.bind("<Button-1>", self.toggle)
                self.cell.grid(row=self.rows, column=self.columns)

    reset = Button(self, text="Reset")
    reset.bind("<Button-1>", self.reset_button)
    reset.grid(row=22, column = 3, columnspan=5)

    def reset_button(self, event):
        self.cell.destroy()
        for rows in range(1,21):
               for columns in range(1,21):
                   self.columns = columns
                   self.rows = rows
                   self.cell = Button(self, text='')
                   self.cell.bind("<Button-1>", self.toggle)
                   self.cell.grid(row=self.rows, column=self.columns)

在我按下重置按钮后，现在发生的事情是一个按钮被销毁，另一组按钮在已经存在的按钮之上，但我需要能够销毁或至少将所有按钮配置为空白.那么，既然我使用了 for 循环来生成它们，我将如何对所有按钮执行此操作?(除了使用 for 循环之外，还有没有更好的方法来生成按钮?)谢谢.

After I push the reset button what happens right now is one button gets destroyed and another set of buttons are made on top of the already present buttons, but I need to be able to destroy or atleast configure all buttons to be blank. So how would I do that for all the buttons since I used a for loop to generate them? (Is there a better way to generate the buttons besides using a for loop?) Thanks.

推荐答案

一种常见的方法是将对象保存在列表(或字典)中，以便在需要时访问它们.一个简单的例子:

A common method is to save your objects in a list (or dictionary) in order to access them when needed. A simple example:

self.mybuttons = defaultdict(list)
for rows in range(1,21):
    for columns in range(1,21):
        self.mybuttons[rows].append(Button(self, text=''))

这样你就可以得到按钮了:

Then you can get buttons, this way:

abutton = self.mybuttons[arow][acolumn]

您的代码存在一些问题，无法运行它(reset 行的缩进和未定义的 self.toggle 的使用)，所以我无法修复它，但这个例子应该足以让你做到.

There are some problems with your code that prevent running it (indentation of the reset lines and the use of the undefined self.toggle), so I could not fix it, but this example should be enough for you to do it.

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