class Bil:

    def __init__(self, regnr, merke):
        self._regnr = regnr
        self._merke = merke

    def hentRegnr(self):
        return self._regnr

    def hentMerke(self):
        return self._merke

    def __eq__(self, annen):
        return self._regnr == annen.hentRegnr()

bil1 = Bil("AB23547", "Toyota")
bil2 = Bil("CD45679", "Mazda")
bil3 = Bil("AB23547", "Ford")
bil4 = bil3

"""Hva printes her?"""

print(bil1 == bil2) """false"""
print(bil1 == bil3) """true"""
print(bil3 == bil4) """true"""
print(bil3 is bil4) """true"""
print(bil1 is bil3) """false"""
print(bil4 is bil3) """true"""