import tkinter as tk
from random import randint

def conversion(nombre):
    base_16 = ""
    while nombre > 0 :
        reste = nombre % 16
        nombre = nombre // 16
        if 9 < reste :
            if reste == 10:
                reste = "A"
            elif reste == 11:
                reste = "B"
            elif reste == 12:
                reste = "C"
            elif reste == 13:
                reste = "D"
            elif reste == 14:
                reste = "E"
            elif reste == 15:
                reste = "F"
        else :
            
            
        base_16 = reste + base_16
    
    return base_16
        

fenetre = tk.Tk()
value = tk.StringVar()
value.set("")
entree = tk.Entry(fenetre,textvariable = value, width = 30)
entree.grid()


fenetre.mainloop()