Messagebox

[rturus]

Why can't I see the messagebox when input is not a, b, or c? I am sure there is a good reason but I guess I can't find out yet.

Thanks.

from tkinter import*
from tkinter import messagebox

def math():

    while True:
        
        data=input("enter a,b or c ")

        if data=='a':
            data=5
        elif data=='b':
            data=10
        elif data=='c':
            data=15
        else :
            
            hi=messagebox.showerror(title="Try",message="Wrong Input ")
            data=0
        print(data)


math()