from bok import Bok

class Bokhylle:
    def __init__(self, maks_antall):
        self._maks_antall = maks_antall
        self._b?ker = []

    def er_ledig_plass(self):
        if self._maks_antall > len(self._b?ker):
            return True
        return False
    
    def legg_til_bok(self, bok):
        assert type(bok) == Bok

        if not self.er_ledig_plass():
            return False
        
        self._b?ker.append(bok)
        return True
    
    def finn_bok(self, tittel, ?r):
        for bok in self._b?ker:
            if bok.hent_tittel() == tittel and bok.hent_?r() == ?r:
                return bok
            
        return False
    

    def __str__(self):
        streng = ""
        for bok in self._b?ker:
            streng += str(bok)
            streng += "\n"
        return streng