Tkinter newly created button does not execute command

[ChipsSlave]

Hello all,

A script should open an application with two buttons visible. When Hello button is pressed a new button is gridded into the row number 1 and Hello button to be deactivated. When this new button is pressed it should delete itself off the grid and reactivate hello button but it does not do it. Any ideas?

Please check the video to see it in action.

from tkinter import *
 
class Application(Frame):
    def __init__(self, master=None):
        self.master = master
        self.master.geometry('300x100+10+10')
        Frame.__init__(self, master)
        self.pack()
        self.createWidgets()
 
    def new_button(self):
        print("enable_b")
        self.hi_there.config(state=ACTIVE)
        self.new_button.grid_remove()
 
    def say_hi(self):
        print("hi there, everyone!")
        self.new_button = Button(self)
        self.new_button["text"] = "New BTN"
        self.new_button.grid(row=1,column=0)
        self.hi_there.config(state=DISABLED, command=self.new_button)
 
    def createWidgets(self):
        self.QUIT = Button(self)
        self.QUIT.config(text="QUIT",fg="red",command=self.quit)
        self.QUIT.grid(row=0,column=1)
        self.hi_there = Button(self)
        self.hi_there["text"] = "Hello",
        self.hi_there["command"] = self.say_hi
        self.hi_there.grid(row=0,column=0)
 
    def quit(self):
        self.master.destroy()
 
def testit(): 
    root = Tk()
    app = Application(master=root)
    app.mainloop()
 
if __name__ == '__main__':
    testit()

[dwblas]

No one is going to click an unknown (video) link from a public forum. You can use 2 functions, one for each button, or you can use a variable and one function, per the following code.

from tkinter import *
 
    class Application():
        def __init__(self, master=None):
            self.master = master
            self.master.geometry('300x100+10+10')
            self.buttons_state=True  ## True= hi_there, False=new_buttpn
            self.createWidgets()
 
        def change_buttons(self):
            if self.buttons_state:
                self.hi_there.config(state=ACTIVE)
                self.new_button.grid_remove()
            else:
                self.hi_there.config(state=DISABLED)
                self.new_button.grid(row=1,column=0)
 
            self.buttons_state = not self.buttons_state
 
        def createWidgets(self):
            self.QUIT = Button(self.master)
            self.QUIT.config(text="QUIT",fg="red",
                             command=self.master.quit)
            self.QUIT.grid(row=9,column=0)
 
            self.hi_there = Button(self.master, state=DISABLED)
            self.hi_there["text"] = "Hello"
            self.hi_there["command"] = self.change_buttons
            self.hi_there.grid(row=0,column=0)
 
            self.new_button = Button(self.master, command=self.change_buttons)
            self.new_button["text"] = "New BTN"
            self.new_button.grid(row=1,column=0)
            self.master.rowconfigure(1, weight=1, minsize=20)
 
    if __name__ == '__main__':
        root = Tk()
        app = Application(master=root)
        root.mainloop()