from tkinter import *

fenster = Tk()
fenster.title('Beispiel')
fenster.geometry("400x600")


def summe():
    x = int(entry2.get())
    y = int(entry3.get())
    result = x + y 
    label4.config(text=str(result))

label = Label(fenster, text = 'hello world!', font=("Arial", 20))
label.place(x = 20, y = 10)

label1 = Label(fenster, bg='lightgrey',fg='red', text = "hello info-kurs!",         
font=('Times New Roman', 20))
label1.place(x = 20, y = 50)

label2 = Label(fenster, text = 'x', font=("Arial", 20))
label2.place(x = 20, y = 90)

entry2 = Entry(fenster, bg='turquoise', font=("Arial", 20))
entry2.place(x=20, y=125, width=60, height=30)

label3 = Label(fenster, text = 'y', font=("Arial", 20))
label3.place(x = 20, y = 170)

entry3 = Entry(fenster, bg='turquoise', font=("Arial", 20))
entry3.place(x=20, y=205, width=60, height=30)


label4 = Label(fenster,bg='green', text = 'ergebnis',font=("Arial", 20))
label4.place(x = 20, y = 300)

button = Button(fenster, bg='lightblue', text='=',
                font=("Arial", 20), command = summe)
button.place(x=20, y=245, width=60, height=30)