Hiba

import tkinter
window = tkinter.Tk()
e = tkinter.Entry(window)
ew = e.get()
e.grid(row=0, column=1)

e1 = tkinter.Entry(window)
eh = e1.get()
e1.grid(row=0, column=3)

label = tkinter.Label(window, text="Your Height:")
label.grid(row=0, column=0)

label1 = tkinter.Label(window, text="Your Width:")
label1.grid(row=0, column=2)

class Ember:
    def __init__(self, magassag, tomeg):
        self.magassag = magassag
        self.tomeg = tomeg
ember = Ember(int(eh), int(ew))
def bmi_szamolas():
    bmi_eredmeny = ember.tomeg / (ember.magassag * 2)
    bmi_eredmeny_vegleges = round(bmi_eredmeny, 2)
    bmi_eredmeny_vegleges1 = int(bmi_eredmeny_vegleges * 100)
    print(bmi_eredmeny_vegleges1)
    if bmi_eredmeny_vegleges1 > 25:
        print("You are overweight!")
    if bmi_eredmeny_vegleges1 < 25:
        print("You aren't overweight!")

button = tkinter.Button(window, text="Calculate your bmi!", command=bmi_szamolas)
button.grid(row=0, column=4)

window.mainloop()