Паспортный стол

class Passport:
    def __init__(self, number, series, name):
        self.number = number
        self.series = series
        self.name = name
        
class PassportOffice:
    def __init__(self, num_passports):
        self.passports = []
        self.num_passports = num_passports
        
    def fill_series(self, manual_fill=False):
        if manual_fill:
            for i in range(self.num_passports):
                series = input("Enter the series for passport %d: " % (i+1))
                self.passports.append(Passport(i+1, series, ""))
        else:
            for i in range(self.num_passports):
                self.passports.append(Passport(i+1, str(i//1000) + str(i%1000), ""))
                
    def fill_passports(self):
        fill_option = input("Fill passport series manually? (h/a): ")
        if fill_option == 'h':
            self.fill_series(manual_fill=True)
        else:
            self.fill_series()
            
        for passport in self.passports:
            name = input("Enter the name for passport %d: " % passport.number)
            passport.name = name
            
    def check_duplicate(self, passport):
        for p in self.passports:
            if p.number == passport.number and p.series == passport.series:
                return True
        return False
    
    def find_by_number_and_series(self, number, series):
        for passport in self.passports:
            if passport.number == number and passport.series == series:
                return passport.name
        return None