def dia_da_semana(day):
    if day == 1:
        dia = 'Domingo'
    elif day == 2:
        dia = 'Segunda'
    elif day == 3:
        dia = 'Terça'
    elif day == 4:
        dia = 'Quarta'
    elif day == 5:
        dia = 'Quinta'
    elif day == 6:
        dia = 'Sexta'
    elif day == 7:
        dia = 'Sábado'
    else:
        dia = None
    return dia


def weekday(day):
    dia = {
        '1': 'Domingo',
        '2': 'Segunda',
        '3': 'Terça',
        '4': 'Quarta',
        '5': 'Quinta',
        '6': 'Sexta',
        '7': 'Sábado',
    }
    return dia[str(day)]


if __name__ == '__main__':
    print(dia_da_semana(1))
    print(dia_da_semana(2))
    print(dia_da_semana(3))
    print(dia_da_semana(4))
    print(dia_da_semana(5))
    print(dia_da_semana(6))
    print(dia_da_semana(7))

    print('\n')

    print(weekday(1))
    print(weekday(2))
    print(weekday(3))
    print(weekday(4))
    print(weekday(5))
    print(weekday(6))
    print(weekday(7))