from tkinter import *

def save():
    imie = str(e1.get())
    nazwsiko = str(e2.get())
    wiek = str(e3.get())
    f = open("baza.txt", "w+")
    f.write = (imie, nazwsiko, wiek)
    f.close()


main = Tk()
Label(main, text = "Imie:").grid(row=0)
Label(main, text = "Nazwisko:").grid(row=1)
Label(main, text = "Wiek:").grid(row=2)



e1 = Entry(main)
e2 = Entry(main)
e3 = Entry(main)



e1.grid(row=0, column=1)
e2.grid(row=1, column=1)
e3.grid(row=2, column=1)



Button(main, text='save', command=save).grid(row=4, column=2, sticky=W, pady=4)


mainloop()