按钮部件在试图从网格中移除时未被破坏

Question

a。有一个方案，我想在点击几下后删除一个按钮。 b。但是，当按钮达到最后一次点击时，它不会被破坏。 代码如下：

from tkinter import * 

class test_button: 
    def __init__(self, master): 
     self.master = master 
     self.next_button = None 

     if not (self.next_button): 
      self.next_button = Button(root, background="orange red", activebackground="orangered3", text="Next Test Config", command=self.next_button_code).grid(row=1, column=1) 

    def next_button_code(self): 
     if self.next_button: 
      self.next_button.destroy(); self.next_button = None 

# Top Local Variables 
root = Tk() 

# Top Level Default Codes 
my_gui = test_button(root) 

root.mainloop() 

我是否缺少任何东西？请在评论中留言！

Answer 1

变化

self.next_button = Button(root, background="orange red", activebackground="orangered3", text="Next Test Config", command=self.next_button_code).grid(row=1, column=1) 

到：

self.next_button = Button(root, background="orange red", activebackground="orangered3", text="Next Test Config", command=self.next_button_code) 
self.next_button.grid(row=1, column=1)