Sikkeerneq teksti ilinniarneq imaluunniit atorfiit.
Atortut allaaserisat kingorna, suliaqarfik, telefuninut numéro, email-imik atuakkiortoq.
Ilisarnitsi qimmeqarfia Customer-i:
class Customer:
    def __init__(self, iqanngitsi, siullermut, telefoninut, imailinut):
        self.iqanngitsi = iqanngitsi
        self.siullermut = siullermut
        self.telefoninut = telefoninut
        self.imailinut = imailinut 

Qimmeqarfia qanorfiit Customer-i kingullerni:
def enter_customer_data():
    iqanngitsi = input('Iqanngitsi: ')
    siullermut = input('Siullermut: ')
    telefoninut = input('Telefoninut: ')
    imailinut = input('Imailinut: ')
    
    # Tassa Customer qimmeqarfia allatulerni
    return Customer(iqanngitsi, siullermut, telefoninut, imailinut)

Qimmeqarfia qanorfiit kingulleqatigiiffiat:
def store_customer_data(customer):
    # Kingulleqatigiiffia nassiussat inissisimaffiat
    with open('customer_data.txt', 'a') as f:
        # Kingulleqatigiiffia customer-i nassiussat
        f.write(f'{customer.iqanngitsi},{customer.siullermut},{customer.telefoninut},{customer.imailinut}\n')

Pisortat:
if __name__ == '__main__':
    # Qanorfiit kingulleqatigiiffiata allatulerni
    new_customer = enter_customer_data()
    
    # Qanorfiit kingulleqatigiiffiata nassiussat
    store_customer_data(new_customer)
    
    # Inuit kingulleqatigiiffiata nassiussat
    print('Kingulleqatigiiffia nassiussat.')