通过小例子帮助我们更好的理解如何使用tkinter控件的 pack_forget(),grid_forget(),grid_remove()

https://www.delftstack.com/howto/python-tkinter/how-to-hide-recover-and-delete-tkinter-widgets/

1. pack_forget() 方法来隐藏Tkinter控制

与pack()方法相反，我们可以通过调用pack_forget()方法来隐藏Tkinter控件

```python
try:import Tkinter as tk
except:import tkinter as tkclass Test():def __init__(self):self.root = tk.Tk()self.label=tk.Label(self.root,text = "Label")self.buttonForget = tk.Button(self.root,text = 'Click to hide Label',command=lambda: self.label.pack_forget())self.buttonRecover = tk.Button(self.root,text = 'Click to show Label',command=lambda: self.label.pack())       self.buttonForget.pack()self.buttonRecover.pack()self.label.pack(side="bottom")self.root.mainloop()def quit(self):self.root.destroy()app = Test()

点"Click to hide Label"按钮，通过调用pack_forget()方法，将会隐藏Label标签
点"Click to show Label"按钮，通过执行pack()方法，程序会再次在界面显示Label标签

grid_forget() 方法来隐藏控件

如果控制是用grid()方法来绘制的，可以通过grid_forget()方法来隐藏控件

```python
try:import Tkinter as tk
except:import tkinter as tkclass Test():def __init__(self):self.root = tk.Tk()self.label=tk.Label(self.root,text = "Label")self.buttonForget = tk.Button(self.root,text = 'Click to hide Label',command=lambda: self.label.grid_forget())self.buttonRecover = tk.Button(self.root,text = 'Click to show Label',command=lambda: self.label.grid())       self.buttonForget.grid(column=0, row=0, padx=10, pady=10)self.buttonRecover.grid(column=0, row=1, padx=10,  pady=10)self.label.grid(column=0, row=2, padx=10, pady=10)self.root.mainloop()def quit(self):self.root.destroy()app = Test()

![在这里插入图片描述](https://img-blog.csdnimg.cn/20200119161754658.png)
当你执行了隐藏按钮的动作后，会发现label标签的原始位置发生了变化。如果想让它回到原始位置，
那么可行的方法是用grid_remove()主法来操作。
## 用grid_remove()方法来保持隐藏控制的可再现位置
grid_remove()方法在隐藏控件的同时会记住控件行，列位置属性便于恢复```python
try:import Tkinter as tk
except:import tkinter as tkclass Test():def __init__(self):self.root = tk.Tk()self.label=tk.Label(self.root,text = "Label")self.buttonForget = tk.Button(self.root,text = 'Click to hide Label',command=lambda: self.label.grid_remove())self.buttonRecover = tk.Button(self.root,text = 'Click to show Label',command=lambda: self.label.grid())       self.buttonForget.grid(column=0, row=0, padx=10, pady=10)self.buttonRecover.grid(column=0, row=1, padx=10,  pady=10)self.label.grid(column=0, row=2, padx=10, pady=20)self.root.mainloop()def quit(self):self.root.destroy()app = Test()

通地destroy方法来删除控件

try:import Tkinter as tk
except:import tkinter as tkclass Test():def __init__(self):self.root = tk.Tk()self.label=tk.Label(self.root,text = "Label")self.buttonForget = tk.Button(self.root,text = 'Click to hide Label',command=lambda: self.label.destroy())self.buttonRecover = tk.Button(self.root,text = 'Click to show Label',command=lambda: self.label.pack())       self.buttonForget.pack()self.buttonRecover.pack()self.label.pack(side="bottom")self.root.mainloop()def quit(self):self.root.destroy()app = Test()

执行删除操作后，如果再次执行pack()方法，程序则会报错

Exception in Tkinter callback
Traceback (most recent call last):File "D:\WinPython\WPy-3661\python-3.6.6.amd64\lib\tkinter\__init__.py", line 1702, in __call__return self.func(*args)File "C:\Users\jinku\OneDrive\Bureaublad\test.py", line 17, in <lambda>command=lambda: self.label.pack())File "D:\WinPython\WPy-3661\python-3.6.6.amd64\lib\tkinter\__init__.py", line 2140, in pack_configure+ self._options(cnf, kw))
_tkinter.TclError: bad window path name ".!label"