How to use the workalendar.core.WesternCalendar function in workalendar

from ..core import WesternCalendar
from ..registry_tools import iso_register


@iso_register('AO')
class Angola(WesternCalendar):
    "Angola"
    # Civil holiday
    include_labour_day = True
    labour_day_label = "Dia Internacional do Trabalhador"
    # Christian holidays
    include_fat_tuesday = True
    fat_tuesday_label = "Dia de Carnaval"
    include_good_friday = True
    include_easter_sunday = True
    include_christmas = True
    include_all_souls = True

    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (2, 4, "Dia do Inicio da Luta Armada"),
        (3, 8, "Dia Internacional da Mulher"),
        (4, 4, "Dia da Paz"),

from datetime import date, timedelta

from ..core import WesternCalendar, MON, SAT, SUN
from ..registry_tools import iso_register


@iso_register("NZ")
class NewZealand(WesternCalendar):
    "New Zealand"
    include_good_friday = True
    include_easter_monday = True
    include_boxing_day = True

    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (1, 2, "Day after New Year's Day"),
        (2, 6, "Waitangi Day"),
        (4, 25, "ANZAC Day")
    )

    def get_queens_birthday(self, year):
        return (
            NewZealand.get_nth_weekday_in_month(year, 6, MON, 1),
            "Queen's Birthday"
        )

@iso_register('FR')
class France(WesternCalendar):
    'France'

    # Christian holidays
    include_easter_monday = True
    include_ascension = True
    include_whit_monday = True
    include_all_saints = True
    include_assumption = True

    # Civil holidays
    include_labour_day = True
    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (5, 8, "Victory in Europe Day"),
        (7, 14, "Bastille Day"),
        (11, 11, "Armistice Day"),
    )


class FranceAlsaceMoselle(France):
    "France Alsace/Moselle"
    include_good_friday = True
    include_boxing_day = True

from ..core import WesternCalendar
from ..registry_tools import iso_register


@iso_register('ST')
class SaoTomeAndPrincipe(WesternCalendar):
    "São Tomé and Príncipe"
    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (2, 3, "Martyr's Day"),
        (7, 12, "Independence Day"),
        (9, 6, "Armed Forces Day"),
        (9, 30, "Agricultural Reform Day"),
        (12, 21, "São Tomé Day"),
    )
    # Civil holidays
    include_labour_day = True
    # Christian holidays
    include_all_saints = True

from datetime import date
from ..core import WesternCalendar
from ..registry_tools import iso_register


@iso_register('PT')
class Portugal(WesternCalendar):
    'Portugal'

    # Christian holidays
    include_good_friday = True
    include_easter_sunday = True
    include_christmas = True
    include_immaculate_conception = True
    immaculate_conception_label = "Imaculada Conceição"

    # Civil holidays
    include_labour_day = True
    labour_day_label = "Dia do Trabalhador"
    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (4, 25, "Dia da Liberdade"),
        (6, 10, "Dia de Portugal"),
        (8, 15, "Assunção de Nossa Senhora"),

from ..core import WesternCalendar
from ..registry_tools import iso_register


@iso_register('MG')
class Madagascar(WesternCalendar):
    "Madagascar"
    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (3, 29, "Martyrs' Day"),
        (6, 26, "Independence Day"),
    )
    # Civil holidays
    include_labour_day = True
    # Christian holidays
    include_easter_monday = True
    include_ascension = True
    include_whit_monday = True
    include_assumption = True
    include_all_saints = True

from datetime import date, timedelta
from ..core import WesternCalendar, SUN
from ..registry_tools import iso_register


@iso_register('NL')
class Netherlands(WesternCalendar):
    'Netherlands'

    include_good_friday = True
    include_easter_sunday = True
    include_easter_monday = True
    include_ascension = True
    include_whit_sunday = True
    include_whit_monday = True
    include_boxing_day = True

    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (5, 5, "Liberation Day"),
    )

    def get_king_queen_day(self, year):
        """27 April unless this is a Sunday in which case it is the 26th

from datetime import date
from ..core import WesternCalendar, MON
from ..registry_tools import iso_register


@iso_register('GB')
class UnitedKingdom(WesternCalendar):
    'United Kingdom'

    include_good_friday = True
    include_easter_sunday = True
    include_easter_monday = True
    include_boxing_day = True
    shift_new_years_day = True
    non_computable_holiday_dict = {
        1973: [(date(1973, 11, 14), "Royal wedding"), ],
        1977: [(date(1977, 6, 7), "Queen’s Silver Jubilee"), ],
        1981: [(date(1981, 7, 29), "Royal wedding"), ],
        1999: [(date(1999, 12, 31), "New Year's Eve"), ],
        2002: [(date(2002, 6, 3), "Queen’s Golden Jubilee"), ],
        2011: [(date(2011, 4, 29), "Royal Wedding"), ],
        2012: [(date(2012, 6, 5), "Queen’s Diamond Jubilee"), ],
    }

@iso_register("BB")
class Barbados(WesternCalendar):
    "Barbados"
    # Civil holidays
    include_labour_day = True
    # Christian holidays
    include_good_friday = True
    include_easter_sunday = True
    include_easter_monday = True
    include_whit_monday = True
    include_boxing_day = True

    # All holiday are shifted if on a Sunday
    FIXED_HOLIDAYS = WesternCalendar.FIXED_HOLIDAYS + (
        (1, 21, "Errol Barrow Day"),
        (4, 28, "National Heroes Day"),
        (8, 1, "Emancipation Day"),
        (11, 30, "Independance Day"),
    )

    def get_kadooment_day(self, year):
        """
        First Monday of August.
        """
        return (Barbados.get_nth_weekday_in_month(year, 8, MON),
                "Kadooment Day")

    def get_variable_days(self, year):
        """
        Return variable holidays of the Barbados calendar.

def get_first_day_of_summer(self, year):
        """It's the first thursday *after* April, 18th.
        If April the 18th is a thursday, then it jumps to the 24th.
        """
        return WesternCalendar.get_nth_weekday_in_month(
            year, 4, THU,
            start=date(year, 4, 19))