user interface Button not working

[Frankduc]

Hello,

Cant understand why i get this error message. Anyone can give me an explaination?

from tkinter import *

def inverser():
    mot = str(EntreeMot.get())
    inversion = ""

    for carac in mot:
        inversion = carac + inversion
        txtMot.configure(text = str(inversion))

fen1 = Tk()

label1 = Label(fen1, text = "Entrez un mot:")
label1.grid(row = 0, column = 0, sticky = E)

EntreeMot = Entry(fen1)
EntreeMot.grid(row = 0, column = 1)

label2 = Label(fen1, text = "Mot inversé:")
label2.grid(row = 1, column = 0, sticky = E)

txtMot = Label(fen1, text = "")
txtMot.grid(row = 1, column = 1)

bouton = Button(fen1, text = "Inverser", command = inverser)
bouton.grid(row = 2)

fen1.mainloop()

Error:
line 31, in <module>
    bouton = Button(fen1, text = 'Inverser', command = inverser)
NameError: name 'inverser' is not defined

Thank you

[Axel_Erfurt]

Your code works fine for me.

[deanhystad]

Works ok for me. The code you provided is not the code that generated the error (line numbers don't match up). Verify that you are running this code

Why are you doing this?

mot = str(EntreeMot.get())
...
txtMot.configure(text = str(inversion))  # Should not be inside the loop

What is the type of EntreeMot.get()? Do you need to use the str() function? Same question for inversion?

def inverser():
    txtMot.configure(text = EntreeMot.get()[::-1])

[Frankduc]

You are right it is working!
I dont like Pycharm its not user friendly. I got to admit i just started using it.

Everytime i open a file and modify it, instead it runs the main.py which seems to be the older version of the file.
I created a new project and now its working.

Thanks!

[Frankduc]

Works ok for me. The code you provided is not the code that generated the error (line numbers don't match up). Verify that you are running this code

Why are you doing this?

mot = str(EntreeMot.get())
...
txtMot.configure(text = str(inversion))  # Should not be inside the loop

What is the type of EntreeMot.get()? Do you need to use the str() function? Same question for inversion?

def inverser():
    txtMot.configure(text = EntreeMot.get()[::-1])

I removed that part i dont need it: txtMot.configure(text = str(inversion))

the type is a string
its a palindrome code: You put "alla" and it tells you if it is or not a palindrome.