Tkinter GUI Error

[Christian Gollwitzer]

Am 13.01.14 19:49, schrieb fluttershy363 at gmail.com:
>
> Inside the function is where I am having the problem, I am trying to get it to delete the label so that it may then replace it with a shorter text.
> Here is the full code:
>
>
>
>
> from tkinter import *
> import random
> main = Tk()
> main.title("Crack the Code")
>
> def check1():
>      entry = entry1var.get()
>      if entry == num1:
>          labelent1.destroy()
>          labelent1 = Label(main, text="Correct!",fg="green").grid(row = 0, column = 3)

This is the wrong way to do it. Yes, in principle you could remove the 
label and put a new one there; but it's much better to just change the 
text of it by means of either

	labelent1.configure(text="New text ")

or by linking a variable with the label variable at the setup time
	somestringvar = StringVar("initial text")
	Label(main, textvariable=somestringvar)

and then change that variable
	somestringvar.set("New text")

Both of these don't solve the error, though; it has nothing to do with 
Tk, you just did not make labelent1 global. However, I strongly advise 
to use an object for the entire window, where you make this labelent1 an 
instance variable (put into self).

	Christian