def percent_by_gender(gender):
    """
    Get the percentage of the specified gender in the whole community
    """
    count_all = 0
    count_choice = 0

    if gender == 'female' or gender == 'male':
        count_all = Person.select().count()
        count_choice = Person.select().where(Person.gender == gender).count()
        click.echo('Percent of {}: {:.1f}%'.format(
            gender, count_choice * 100 / count_all))
    else:
        click.echo('Wrong gender, try again!')
def people_by_dob_range():
    """
    Provide the date range and get all the people within this range
    """
    flag_change = ''
    flag_found = False
    date1 = click.prompt("Provide the first date (YYYY-MM-DD)",
                         value_proc=get_date)
    date2 = click.prompt("Provide the second date (YYYY-MM-DD)",
                         value_proc=get_date)

    if date1 > date2:
        flag_change = date2
        date2 = date1
        date1 = flag_change

    persons = Person.select()
    for person in persons:
        dob = Dob.select().join(Person).where(Person.id == person.id).get()
        name = Name.select().join(Person).where(Person.id == person.id).get()
        dt = datetime.strptime(dob.date, "%Y-%m-%dT%H:%M:%S.%fZ")
        dob_new = date(dt.year, dt.month, dt.day)

        if date1 <= dob_new <= date2:
            result = name.first + ' ' + name.last + ' - ' + str(dob_new)
            click.echo(result)
            flag_found = True
    if not flag_found:
        click.echo("No results!")