some new features

.venv/lib/python3.12/site-packages/holidays/countries/latvia.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 gettext import gettext as tr
+
+from holidays.calendars.gregorian import MAY, JUL, SEP
+from holidays.groups import ChristianHolidays, InternationalHolidays, StaticHolidays
+from holidays.observed_holiday_base import ObservedHolidayBase, SAT_SUN_TO_NEXT_MON
+
+
+class Latvia(ObservedHolidayBase, ChristianHolidays, InternationalHolidays, StaticHolidays):
+    """Latvia holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Latvia>
+        * <https://web.archive.org/web/20250210170838/https://www.information.lv/>
+        * <https://web.archive.org/web/20240914233046/https://likumi.lv/ta/id/72608-par-svetku-atceres-un-atzimejamam-dienam>
+    """
+
+    country = "LV"
+    default_language = "lv"
+    # %s (observed).
+    observed_label = tr("%s (brīvdiena)")
+    supported_languages = ("en_US", "lv", "uk")
+    start_year = 1990
+
+    def __init__(self, *args, **kwargs):
+        ChristianHolidays.__init__(self)
+        InternationalHolidays.__init__(self)
+        StaticHolidays.__init__(self, LatviaStaticHolidays)
+        kwargs.setdefault("observed_rule", SAT_SUN_TO_NEXT_MON)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        # New Year's Day.
+        self._add_new_years_day(tr("Jaunais Gads"))
+
+        # Good Friday.
+        self._add_good_friday(tr("Lielā Piektdiena"))
+
+        # Easter Sunday.
+        self._add_easter_sunday(tr("Lieldienas"))
+
+        # Easter Monday.
+        self._add_easter_monday(tr("Otrās Lieldienas"))
+
+        # Labor Day.
+        self._add_labor_day(tr("Darba svētki"))
+
+        if self._year >= 2002:
+            # Restoration of Independence Day.
+            dt = self._add_holiday_may_4(tr("Latvijas Republikas Neatkarības atjaunošanas diena"))
+            if self._year >= 2008:
+                self._add_observed(dt)
+
+        # Mother's Day.
+        self._add_holiday_2nd_sun_of_may(tr("Mātes diena"))
+
+        # Midsummer Eve.
+        self._add_holiday_jun_23(tr("Līgo diena"))
+
+        # Midsummer Day.
+        self._add_saint_johns_day(tr("Jāņu diena"))
+
+        # Republic of Latvia Proclamation Day.
+        dt = self._add_holiday_nov_18(tr("Latvijas Republikas proklamēšanas diena"))
+        if self._year >= 2007:
+            self._add_observed(dt)
+
+        if self._year >= 2007:
+            # Christmas Eve.
+            self._add_christmas_eve(tr("Ziemassvētku vakars"))
+
+        # Christmas Day.
+        self._add_christmas_day(tr("Ziemassvētki"))
+
+        # Second Day of Christmas.
+        self._add_christmas_day_two(tr("Otrie Ziemassvētki"))
+
+        # New Year's Eve.
+        self._add_new_years_eve(tr("Vecgada vakars"))
+
+
+class LV(Latvia):
+    pass
+
+
+class LVA(Latvia):
+    pass
+
+
+class LatviaStaticHolidays:
+    # General Latvian Song and Dance Festival closing day.
+    song_and_dance_festival_closing_day = tr(
+        "Vispārējo latviešu Dziesmu un deju svētku noslēguma dienu"
+    )
+    # Day of His Holiness Pope Francis' pastoral visit to Latvia.
+    pope_francis_pastoral_visit_day = tr(
+        "Viņa Svētības pāvesta Franciska pastorālās vizītes Latvijā diena"
+    )
+    # Day the Latvian hockey team won the bronze medal at the 2023 World Ice Hockey Championship.
+    hockey_team_win_bronze_medal_day = tr(
+        "Diena, kad Latvijas hokeja komanda ieguva bronzas medaļu 2023. gada "
+        "Pasaules hokeja čempionātā"
+    )
+    special_public_holidays = {
+        2018: (
+            (JUL, 9, song_and_dance_festival_closing_day),
+            (SEP, 24, pope_francis_pastoral_visit_day),
+        ),
+        2023: (
+            (MAY, 29, hockey_team_win_bronze_medal_day),
+            (JUL, 10, song_and_dance_festival_closing_day),
+        ),
+    }