Python tkinter removing label after 2 seconds-CodePudding

I'm trying to have a Label appear for 2 seconds when condition is met. User is supposed to enter 3 fields, if they do not, i dont want them to be allowed to proceed. I'm not able to delete this Label called "warnlabel" no matter which approach. Please let me know what am I doing wrong.

def get_API_KEYS():  #Main function
    root = Tk()
    """...other declarations / conditions  / window settings ..."""
    def Save_KC_Keys(): #Button press triggers this function
        if len(UE1_var.get()) == 0 or len(UE2_var.get()) == 0 or len(UE3_var.get()) == 0:
            warnlabel = Label(root, text="MUST ENTER ALL 3").grid(row=1, column=3)

            #root.forget(Label)
            #root.after(1000, root.destroy(warnlabel))
            #root.forget(warnlabel)
        """...other conditions..."""
    root.mainloop()

I have tried .forget / .destroy / .after (i would prefer .after to work), however in almost every configuration i receive an error such as :

return getattr(self.tk, attr)
AttributeError: '_tkinter.tkapp' object has no attribute '_name'

root.after(1000, root.destroy(warnlabel))
TypeError: Tk.destroy() takes 1 positional argument but 2 were given

self.tk.call('wm', 'forget', window)
_tkinter.TclError: wrong # args: should be "wm option window ?arg ...?"

CodePudding user response：

Attempt to do

root.after(2000, lambda: warnlabel.destroy())

Try using it without lambda.

And also change

warnlabel = Label(root, text="MUST ENTER ALL 3").grid(row=1, column=3)

To this

warnlabel = Label(root, text="MUST ENTER ALL 3")
warnlabel.grid(row=1, column=3)