class Personel:
    
    def __init__(self, ad, soyad, maas):
        self.ad = ad
        self.soyad = soyad
        self.email = f'{self.ad.lower()}.{self.soyad.lower()}@halkbank.com.tr'
        self.maas = int(maas)
        
    def isim(self):
        return f'{self.ad} {self.soyad}'
    
    def __repr__(self):
        return 'Personel(ad, soyad, maas)'
    
    
    def __str__(self):
        return self.isim()
        
    def __len__(self):
        return 5
    
    def __add__(self, per):
        return self.maas + per.maas
        
per_1 = Personel('Emre', 'Çevik', 10000)
per_2 = Personel('Ahmet', 'Şen', 20000)


print(per_1 + per_2)