some new features

.venv/lib/python3.12/site-packages/holidays/countries/greece.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.julian_revised import JULIAN_REVISED_CALENDAR
+from holidays.constants import HALF_DAY, PUBLIC
+from holidays.groups import ChristianHolidays, InternationalHolidays
+from holidays.observed_holiday_base import (
+    ObservedHolidayBase,
+    MON_TO_NEXT_TUE,
+    SAT_SUN_TO_NEXT_WORKDAY,
+)
+
+
+class Greece(ObservedHolidayBase, ChristianHolidays, InternationalHolidays):
+    """Greece holidays.
+
+    References:
+        * <https://en.wikipedia.org/wiki/Public_holidays_in_Greece>
+        * [2024 Labor Day transfer](https://web.archive.org/web/20240813221449/https://www.et.gr/api/DownloadFeksApi/?fek_pdf=20240201406)
+    """
+
+    country = "GR"
+    default_language = "el"
+    # %s (observed).
+    observed_label = tr("%s (παρατηρήθηκε)")
+    supported_categories = (HALF_DAY, PUBLIC)
+    supported_languages = ("el", "en_US", "uk")
+
+    def __init__(self, *args, **kwargs):
+        ChristianHolidays.__init__(self, JULIAN_REVISED_CALENDAR)
+        InternationalHolidays.__init__(self)
+        kwargs.setdefault("observed_rule", SAT_SUN_TO_NEXT_WORKDAY)
+        kwargs.setdefault("observed_since", 2017)
+        super().__init__(*args, **kwargs)
+
+    def _populate_public_holidays(self):
+        # New Year's Day.
+        self._add_new_years_day(tr("Πρωτοχρονιά"))
+
+        # Epiphany.
+        self._add_epiphany_day(tr("Θεοφάνεια"))
+
+        # Green Monday.
+        self._add_ash_monday(tr("Καθαρά Δευτέρα"))
+
+        # Independence Day.
+        self._add_holiday_mar_25(tr("Εικοστή Πέμπτη Μαρτίου"))
+
+        # Good Friday.
+        self._add_good_friday(tr("Μεγάλη Παρασκευή"))
+
+        # Easter Monday.
+        easter_monday = self._add_easter_monday(tr("Δευτέρα του Πάσχα"))
+
+        # Whit Monday.
+        self._add_whit_monday(tr("Δευτέρα του Αγίου Πνεύματος"))
+
+        # Labor Day.
+        name = tr("Εργατική Πρωτομαγιά")
+        if self._year == 2024:
+            self._add_holiday_may_7(name)
+        else:
+            self._add_observed(
+                may_1 := self._add_labor_day(name),
+                rule=MON_TO_NEXT_TUE if may_1 == easter_monday else SAT_SUN_TO_NEXT_WORKDAY,
+            )
+
+        # Dormition of the Mother of God.
+        self._add_assumption_of_mary_day(tr("Κοίμηση της Θεοτόκου"))
+
+        # Ochi Day.
+        self._add_holiday_oct_28(tr("Ημέρα του Όχι"))
+
+        # Christmas Day.
+        self._add_christmas_day(tr("Χριστούγεννα"))
+
+        # Glorifying of the Mother of God.
+        self._add_christmas_day_two(tr("Σύναξη της Υπεραγίας Θεοτόκου"))
+
+    def _populate_half_day_holidays(self):
+        # Christmas Eve.
+        self._add_christmas_eve(tr("Παραμονή Χριστουγέννων"))
+
+        # New Year's Eve.
+        self._add_new_years_eve(tr("Παραμονή Πρωτοχρονιάς"))
+
+
+class GR(Greece):
+    pass
+
+
+class GRC(Greece):
+    pass