for tedzo :D

import tkinter as tk
from random import randint

def main_func():
    global for_change
    for_change.grid(row=6, column=0)
    try:
        sum = 0
        for i in range(int(t1.get())):
            sum+=randint(int(t2.get()),int(t3.get()))

        for_change.config(text='sum of nubers: %s ' % sum)

    except ValueError:
        for_change.config(text='incorrect input values')

    except:
        for_change.config(text='something went wrong')


root = tk.Tk()
root.geometry("500x200")
root.configure(bg="orange red")
f = tk.Label(root, text="tornike edilashvili", font=('Arial', 18))
f.grid(row=0,column=0)



t1 = tk.Entry(root)
t2 = tk.Entry(root)
t3 = tk.Entry(root)


t1.grid(row=1, column=0)
t2.grid(row=2, column=0)
t3.grid(row=3, column=0)


tk.Button(root,
          text='Count', command=main_func).grid(row=4,
                                                       column=0,
                                                       sticky=tk.W,
                                                       pady=4)
for_change = tk.Label(root, text="", font=('Arial', 16))
for_change.grid_forget()
tk.mainloop()