清除Tkinter中的特定小部件

Question

I am attempting to have a function in python that clears the screen upon a button being pressed. I am aware of grid_remove but am unsure of how to use it. Also is there a way to clear everything from a specific function, ie both "hi" and "clear"?

from tkinter import *

class Movies:
    def __init__(self, master):
        hi = Label(text = "Hello")
        hi.grid(row = 0, column = 0)

        clear = Button(text = "Click", command=self.clear)
        clear.grid(row = 1, column = 0)
    def clear(self):
        hi.grid_remove()




root = Tk()
gui = Movies(root)
root.geometry("100x200+0+0")
root.mainloop()

Answer 1

You could use the built in winfo_children method if you're just wanting to toggle hiding / showing all of the widgets in whatever parent holds the widgets. Small example:

from tkinter import *

class Movies:

    def __init__(self, master):

        self.master = master
        self.state = 1

        for i in range(5):
            Label(self.master, text='Label %d' % i).grid(row=0, column=i)
        self.magic_btn = Button(self.master, text='Make the Magic!', 
            command=self.magic)
        self.magic_btn.grid(columnspan=5)

    def magic(self):

        self.state = not self.state
        for widget in self.master.winfo_children(): #iterate over all child widgets in the parent
            #Comment out to clear the button too, or leave to toggle widget states
            if widget != self.magic_btn: #or some other widget you want to stay shown
                if self.state:
                    widget.grid()
                else:
                    widget.grid_remove()
                print(self.state)


root = Tk()
gui = Movies(root)
root.mainloop()