some new features

.venv/lib/python3.12/site-packages/holidays/countries/nigeria.py

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+#  holidays
+#  --------
+#  A fast, efficient Python library for generating country, province and state
+#  specific sets of holidays on the fly. It aims to make determining whether a
+#  specific date is a holiday as fast and flexible as possible.
+#
+#  Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
+#           dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
+#           ryanss <ryanssdev@icloud.com> (c) 2014-2017
+#  Website: https://github.com/vacanza/holidays
+#  License: MIT (see LICENSE file)
+
+from holidays.calendars.gregorian import FEB, MAY
+from holidays.groups import (
+    ChristianHolidays,
+    InternationalHolidays,
+    IslamicHolidays,
+    StaticHolidays,
+)
+from holidays.observed_holiday_base import ObservedHolidayBase, SAT_SUN_TO_NEXT_WORKDAY
+
+
+class Nigeria(
+    ObservedHolidayBase, ChristianHolidays, InternationalHolidays, IslamicHolidays, StaticHolidays
+):
+    """Nigeria holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Nigeria>
+    """
+
+    country = "NG"
+    observed_label = "%s (observed)"
+    start_year = 1979
+
+    def __init__(self, *args, islamic_show_estimated: bool = True, **kwargs):
+        """
+        Args:
+            islamic_show_estimated:
+                Whether to add "estimated" label to Islamic holidays name
+                if holiday date is estimated.
+        """
+        ChristianHolidays.__init__(self)
+        InternationalHolidays.__init__(self)
+        IslamicHolidays.__init__(self, show_estimated=islamic_show_estimated)
+        StaticHolidays.__init__(self, NigeriaStaticHolidays)
+        kwargs.setdefault("observed_rule", SAT_SUN_TO_NEXT_WORKDAY)
+        kwargs.setdefault("observed_since", 2016)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        dts_observed = set()
+
+        # New Year's Day.
+        dts_observed.add(self._add_new_years_day("New Year's Day"))
+
+        self._add_good_friday("Good Friday")
+        self._add_easter_monday("Easter Monday")
+
+        # Worker's day.
+        if self._year >= 1981:
+            dts_observed.add(self._add_labor_day("Workers' Day"))
+
+        # Democracy Day.
+        if self._year >= 2000:
+            name = "Democracy Day"
+            dts_observed.add(
+                self._add_holiday_jun_12(name)
+                if self._year >= 2019
+                else self._add_holiday_may_29(name)
+            )
+
+        # Independence Day.
+        dts_observed.add(self._add_holiday_oct_1("Independence Day"))
+
+        # Christmas day.
+        dts_observed.add(self._add_christmas_day("Christmas Day"))
+
+        # Boxing day.
+        dts_observed.add(self._add_christmas_day_two("Boxing Day"))
+
+        # Eid al-Fitr.
+        dts_observed.update(self._add_eid_al_fitr_day("Eid-el-Fitr"))
+        dts_observed.update(self._add_eid_al_fitr_day_two("Eid-el-Fitr Holiday"))
+
+        # Eid al-Adha.
+        dts_observed.update(self._add_eid_al_adha_day("Eid-el-Kabir"))
+        dts_observed.update(self._add_eid_al_adha_day_two("Eid-el-Kabir Holiday"))
+
+        # Birthday of Prophet Muhammad.
+        dts_observed.update(self._add_mawlid_day("Eid-el-Mawlid"))
+
+        if self.observed:
+            self._populate_observed(dts_observed)
+
+
+class NG(Nigeria):
+    pass
+
+
+class NGA(Nigeria):
+    pass
+
+
+class NigeriaStaticHolidays:
+    special_public_holidays = {
+        2019: (
+            (FEB, 22, "Public Holiday for Elections"),
+            (MAY, 29, "Presidential Inauguration Day"),
+        ),
+    }