Add Vietnamese translation of VietNam holidays

AUTHORS

@@ -139,4 +139,5 @@ Tudor Văran
 Victor Luna
 Victor Miti
 Ville Skyttä
+Vu Nhat Chuong
 Youhei Sakurai

README.rst

@@ -933,7 +933,7 @@ All other default values are highlighted with bold:
    * - Vietnam
      - VN
      -
-     -
+     - en_US, **vi**
      -
    * - Virgin Islands (U.S.)
      - VI

holidays/countries/vietnam.py

@@ -10,6 +10,8 @@
 #  Website: https://github.com/vacanza/python-holidays
 #  License: MIT (see LICENSE file)
 
+from gettext import gettext as tr
+
 from holidays.groups import ChineseCalendarHolidays, InternationalHolidays
 from holidays.observed_holiday_base import ObservedHolidayBase, SAT_SUN_TO_NEXT_WORKDAY
 
@@ -22,7 +24,10 @@ class Vietnam(ObservedHolidayBase, ChineseCalendarHolidays, InternationalHoliday
     """
 
     country = "VN"
-    observed_label = "%s (observed)"
+    # %s (observed).
+    observed_label = tr("%s (nghỉ bù)")
+    default_language = "vi"
+    supported_languages = ("en_US", "vi")
 
     def __init__(self, *args, **kwargs):
         ChineseCalendarHolidays.__init__(self)
@@ -34,29 +39,38 @@ def _populate_public_holidays(self):
         dts_observed = set()
 
         # New Year's Day
-        dts_observed.add(self._add_new_years_day("International New Year's Day"))
+        dts_observed.add(self._add_new_years_day(tr("Tết Dương lịch")))
+
+        # Lunar New Year's Eve
+        self._add_chinese_new_years_eve(tr("Giao thừa Tết Nguyên Đán"))
 
         # Lunar New Year
-        self._add_chinese_new_years_eve("Vietnamese New Year's Eve")
-        self._add_chinese_new_years_day("Vietnamese New Year")
-        self._add_chinese_new_years_day_two("The second day of Tet Holiday")
-        self._add_chinese_new_years_day_three("The third day of Tet Holiday")
-        self._add_chinese_new_years_day_four("The forth day of Tet Holiday")
-        self._add_chinese_new_years_day_five("The fifth day of Tet Holiday")
-
-        # Vietnamese Kings' Commemoration Day
-        # https://en.wikipedia.org/wiki/H%C3%B9ng_Kings%27_Festival
+        self._add_chinese_new_years_day(tr("Tết Nguyên Đán"))
+
+        # Second Day of Lunar New Year
+        self._add_chinese_new_years_day_two(tr("Mùng hai Tết Nguyên Đán"))
+
+        # Third Day of Lunar New Year
+        self._add_chinese_new_years_day_three(tr("Mùng ba Tết Nguyên Đán"))
+
+        # Fourth Day of Lunar New Year
+        self._add_chinese_new_years_day_four(tr("Mùng bốn Tết Nguyên Đán"))
+
+        # Fifth Day of Lunar New Year
+        self._add_chinese_new_years_day_five(tr("Mùng năm Tết Nguyên Đán"))
+
         if self._year >= 2007:
-            dts_observed.add(self._add_hung_kings_day("Hung Kings Commemoration Day"))
+            # Hung Kings' Commemoration Day
+            dts_observed.add(self._add_hung_kings_day(tr("Ngày Giỗ Tổ Hùng Vương")))
 
         # Liberation Day/Reunification Day
-        dts_observed.add(self._add_holiday_apr_30("Liberation Day/Reunification Day"))
+        dts_observed.add(self._add_holiday_apr_30(tr("Ngày Chiến thắng")))
 
         # International Labor Day
-        dts_observed.add(self._add_labor_day("International Labor Day"))
+        dts_observed.add(self._add_labor_day(tr("Ngày Quốc tế Lao động")))
 
-        # Independence Day
-        dts_observed.add(self._add_holiday_sep_2("Independence Day"))
+        # National Day
+        dts_observed.add(self._add_holiday_sep_2(tr("Quốc khánh")))
 
         if self.observed:
             self._populate_observed(dts_observed)

holidays/locale/en_US/LC_MESSAGES/VN.po

@@ -0,0 +1,75 @@
+#  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 AUTHORS file)
+#           dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
+#           ryanss <ryanssdev@icloud.com> (c) 2014-2017
+#  Website: https://github.com/vacanza/python-holidays
+#  License: MIT (see LICENSE file)
+#
+# Vietnam holidays en_US localization.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Python Holidays 0.58\n"
+"POT-Creation-Date: 2024-09-27 15:50+0700\n"
+"PO-Revision-Date: 2024-09-27 15:50+0700\n"
+"Last-Translator: Vu Nhat Chuong <ronnyvu321@gmail.com>\n"
+"Language-Team: Python Holidays Localization Team\n"
+"Language: vi\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.4\n"
+
+#. %s (observed).
+#, c-format
+msgid "%s (nghỉ bù)"
+msgstr "%s (observed)"
+
+#. New Year's Day
+msgid "Tết Dương lịch"
+msgstr "New Year's Day"
+
+#. Lunar New Year's Eve
+msgid "Giao thừa Tết Nguyên Đán"
+msgstr "Lunar New Year's Eve"
+
+#. Lunar New Year
+msgid "Tết Nguyên Đán"
+msgstr "Lunar New Year"
+
+#. Second Day of Lunar New Year
+msgid "Mùng hai Tết Nguyên Đán"
+msgstr "The second day of Tet Holiday"
+
+#. Third Day of Lunar New Year
+msgid "Mùng ba Tết Nguyên Đán"
+msgstr "The third day of Tet Holiday"
+
+#. Fourth Day of Lunar New Year
+msgid "Mùng bốn Tết Nguyên Đán"
+msgstr "The fourth day of Tet Holiday"
+
+#. Fifth Day of Lunar New Year
+msgid "Mùng năm Tết Nguyên Đán"
+msgstr "The fifth day of Tet Holiday"
+
+#. Hung Kings' Commemoration Day
+msgid "Ngày Giỗ Tổ Hùng Vương"
+msgstr "Hung Kings' Commemoration Day"
+
+#. Liberation Day/Reunification Day
+msgid "Ngày Chiến thắng"
+msgstr "Liberation Day/Reunification Day"
+
+#. International Labor Day
+msgid "Ngày Quốc tế Lao động"
+msgstr "International Labor Day"
+
+#. National Day
+msgid "Quốc khánh"
+msgstr "National Day"

holidays/locale/vi/LC_MESSAGES/VN.po

@@ -0,0 +1,75 @@
+#  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 AUTHORS file)
+#           dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
+#           ryanss <ryanssdev@icloud.com> (c) 2014-2017
+#  Website: https://github.com/vacanza/python-holidays
+#  License: MIT (see LICENSE file)
+#
+# Vietnam holidays.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Python Holidays 0.58\n"
+"POT-Creation-Date: 2024-09-27 15:50+0700\n"
+"PO-Revision-Date: 2024-09-27 15:50+0700\n"
+"Last-Translator: Vu Nhat Chuong <ronnyvu321@gmail.com>\n"
+"Language-Team: Python Holidays Localization Team\n"
+"Language: vi\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Lingva 5.0.4\n"
+
+#. %s (observed).
+#, c-format
+msgid "%s (nghỉ bù)"
+msgstr ""
+
+#. New Year's Day
+msgid "Tết Dương lịch"
+msgstr ""
+
+#. Lunar New Year's Eve
+msgid "Giao thừa Tết Nguyên Đán"
+msgstr ""
+
+#. Lunar New Year
+msgid "Tết Nguyên Đán"
+msgstr ""
+
+#. Second Day of Lunar New Year
+msgid "Mùng hai Tết Nguyên Đán"
+msgstr ""
+
+#. Third Day of Lunar New Year
+msgid "Mùng ba Tết Nguyên Đán"
+msgstr ""
+
+#. Fourth Day of Lunar New Year
+msgid "Mùng bốn Tết Nguyên Đán"
+msgstr ""
+
+#. Fifth Day of Lunar New Year
+msgid "Mùng năm Tết Nguyên Đán"
+msgstr ""
+
+#. Hung Kings' Commemoration Day
+msgid "Ngày Giỗ Tổ Hùng Vương"
+msgstr ""
+
+#. Liberation Day/Reunification Day
+msgid "Ngày Chiến thắng"
+msgstr ""
+
+#. International Labor Day
+msgid "Ngày Quốc tế Lao động"
+msgstr ""
+
+#. National Day
+msgid "Quốc khánh"
+msgstr ""

tests/countries/test_vietnam.py

@@ -28,14 +28,12 @@ def test_country_aliases(self):
 
     def test_common(self):
         self.assertHolidayName(
-            "International New Year's Day",
+            "Tết Dương lịch",
             "2020-01-01",
         )
 
     def test_first_day_of_january(self):
-        self.assertHolidayName(
-            "International New Year's Day", (f"{year}-01-01" for year in range(1979, 2050))
-        )
+        self.assertHolidayName("Tết Dương lịch", (f"{year}-01-01" for year in range(1979, 2050)))
 
     def test_lunar_new_year(self):
         for dts in (
@@ -57,41 +55,39 @@ def test_lunar_new_year(self):
             (2022, 2, 1),
         ):
             dt = date(*dts)
-            self.assertHolidayName("Vietnamese New Year's Eve", _timedelta(dt, -1))
-            self.assertHolidayName("Vietnamese New Year", dt)
-            self.assertHolidayName("The second day of Tet Holiday", _timedelta(dt, +1))
-            self.assertHolidayName("The third day of Tet Holiday", _timedelta(dt, +2))
-            self.assertHolidayName("The forth day of Tet Holiday", _timedelta(dt, +3))
-            self.assertHolidayName("The fifth day of Tet Holiday", _timedelta(dt, +4))
+            self.assertHolidayName("Giao thừa Tết Nguyên Đán", _timedelta(dt, -1))
+            self.assertHolidayName("Tết Nguyên Đán", dt)
+            self.assertHolidayName("Mùng hai Tết Nguyên Đán", _timedelta(dt, +1))
+            self.assertHolidayName("Mùng ba Tết Nguyên Đán", _timedelta(dt, +2))
+            self.assertHolidayName("Mùng bốn Tết Nguyên Đán", _timedelta(dt, +3))
+            self.assertHolidayName("Mùng năm Tết Nguyên Đán", _timedelta(dt, +4))
 
     def test_king_hung_day(self):
         self.assertHolidayName(
-            "Hung Kings Commemoration Day",
+            "Ngày Giỗ Tổ Hùng Vương",
             "2020-04-02",
             "2021-04-21",
             "2022-04-10",
         )
 
     def test_liberation_day(self):
-        self.assertHolidayName(
-            "Liberation Day/Reunification Day", (f"{year}-04-30" for year in range(1979, 2050))
-        )
+        self.assertHolidayName("Ngày Chiến thắng", (f"{year}-04-30" for year in range(1979, 2050)))
 
     def test_international_labor_day(self):
         self.assertHolidayName(
-            "International Labor Day", (f"{year}-05-01" for year in range(1979, 2050))
+            "Ngày Quốc tế Lao động", (f"{year}-05-01" for year in range(1979, 2050))
         )
 
     def test_independence_day(self):
-        self.assertHolidayName("Independence Day", (f"{year}-09-02" for year in range(1979, 2050)))
+        self.assertHolidayName("Quốc khánh", (f"{year}-09-02" for year in range(1979, 2050)))
 
     def test_observed(self):
         observed_holidays = (
-            # International New Year's Day.
+            # New Year's Day.
             "2012-01-02",
             "2017-01-02",
             "2022-01-03",
-            # Hung Kings Commemoration Day.
+            # Hung Kings' Commemoration Day.
             "2012-04-02",
             "2016-04-18",
             "2019-04-15",
@@ -108,11 +104,50 @@ def test_observed(self):
             "2016-05-03",
             "2021-05-03",
             "2022-05-03",
-            # Independence Day.
+            # National Day.
             "2012-09-03",
             "2017-09-04",
             "2018-09-03",
             "2023-09-04",
         )
         self.assertHoliday(observed_holidays)
         self.assertNoNonObservedHoliday(observed_holidays)
+
+    def test_l10n_default(self):
+        self.assertLocalizedHolidays(
+            ("2022-01-01", "Tết Dương lịch"),
+            ("2022-01-03", "Tết Dương lịch (nghỉ bù)"),
+            ("2022-01-31", "Giao thừa Tết Nguyên Đán"),
+            ("2022-02-01", "Tết Nguyên Đán"),
+            ("2022-02-02", "Mùng hai Tết Nguyên Đán"),
+            ("2022-02-03", "Mùng ba Tết Nguyên Đán"),
+            ("2022-02-04", "Mùng bốn Tết Nguyên Đán"),
+            ("2022-02-05", "Mùng năm Tết Nguyên Đán"),
+            ("2022-04-10", "Ngày Giỗ Tổ Hùng Vương"),
+            ("2022-04-11", "Ngày Giỗ Tổ Hùng Vương (nghỉ bù)"),
+            ("2022-04-30", "Ngày Chiến thắng"),
+            ("2022-05-01", "Ngày Quốc tế Lao động"),
+            ("2022-05-02", "Ngày Chiến thắng (nghỉ bù)"),
+            ("2022-05-03", "Ngày Quốc tế Lao động (nghỉ bù)"),
+            ("2022-09-02", "Quốc khánh"),
+        )
+
+    def test_l10n_en_us(self):
+        self.assertLocalizedHolidays(
+            "en_US",
+            ("2022-01-01", "New Year's Day"),
+            ("2022-01-03", "New Year's Day (observed)"),
+            ("2022-01-31", "Lunar New Year's Eve"),
+            ("2022-02-01", "Lunar New Year"),
+            ("2022-02-02", "The second day of Tet Holiday"),
+            ("2022-02-03", "The third day of Tet Holiday"),
+            ("2022-02-04", "The fourth day of Tet Holiday"),
+            ("2022-02-05", "The fifth day of Tet Holiday"),
+            ("2022-04-10", "Hung Kings' Commemoration Day"),
+            ("2022-04-11", "Hung Kings' Commemoration Day (observed)"),
+            ("2022-04-30", "Liberation Day/Reunification Day"),
+            ("2022-05-01", "International Labor Day"),
+            ("2022-05-02", "Liberation Day/Reunification Day (observed)"),
+            ("2022-05-03", "International Labor Day (observed)"),
+            ("2022-09-02", "National Day"),
+        )