Add Luxembourgish Locale (#993)

Author: yichidev

arrow/constants.py

@@ -128,4 +128,6 @@
     "ms-bn",
     "or",
     "or-in",
+    "lb",
+    "lb-lu",
 }

arrow/locales.py

@@ -5164,3 +5164,105 @@ def _format_timeframe(
                 form = form["higher"]
 
         return form.format(delta)
+
+
+class LuxembourgishLocale(Locale):
+
+    names = ["lb", "lb-lu"]
+
+    past = "virun {0}"
+    future = "an {0}"
+    and_word = "an"
+
+    timeframes = {
+        "now": "just elo",
+        "second": "enger Sekonn",
+        "seconds": "{0} Sekonnen",
+        "minute": "enger Minutt",
+        "minutes": "{0} Minutten",
+        "hour": "enger Stonn",
+        "hours": "{0} Stonnen",
+        "day": "engem Dag",
+        "days": "{0} Deeg",
+        "week": "enger Woch",
+        "weeks": "{0} Wochen",
+        "month": "engem Mount",
+        "months": "{0} Méint",
+        "year": "engem Joer",
+        "years": "{0} Jahren",
+    }
+
+    timeframes_only_distance = timeframes.copy()
+    timeframes_only_distance["second"] = "eng Sekonn"
+    timeframes_only_distance["minute"] = "eng Minutt"
+    timeframes_only_distance["hour"] = "eng Stonn"
+    timeframes_only_distance["day"] = "een Dag"
+    timeframes_only_distance["days"] = "{0} Deeg"
+    timeframes_only_distance["week"] = "eng Woch"
+    timeframes_only_distance["month"] = "ee Mount"
+    timeframes_only_distance["months"] = "{0} Méint"
+    timeframes_only_distance["year"] = "ee Joer"
+    timeframes_only_distance["years"] = "{0} Joer"
+
+    month_names = [
+        "",
+        "Januar",
+        "Februar",
+        "Mäerz",
+        "Abrëll",
+        "Mee",
+        "Juni",
+        "Juli",
+        "August",
+        "September",
+        "Oktouber",
+        "November",
+        "Dezember",
+    ]
+
+    month_abbreviations = [
+        "",
+        "Jan",
+        "Feb",
+        "Mäe",
+        "Abr",
+        "Mee",
+        "Jun",
+        "Jul",
+        "Aug",
+        "Sep",
+        "Okt",
+        "Nov",
+        "Dez",
+    ]
+
+    day_names = [
+        "",
+        "Méindeg",
+        "Dënschdeg",
+        "Mëttwoch",
+        "Donneschdeg",
+        "Freideg",
+        "Samschdeg",
+        "Sonndeg",
+    ]
+
+    day_abbreviations = ["", "Méi", "Dën", "Mët", "Don", "Fre", "Sam", "Son"]
+
+    def _ordinal_number(self, n: int) -> str:
+        return f"{n}."
+
+    def describe(
+        self,
+        timeframe: TimeFrameLiteral,
+        delta: Union[int, float] = 0,
+        only_distance: bool = False,
+    ) -> str:
+
+        if not only_distance:
+            return super().describe(timeframe, delta, only_distance)
+
+        # Luxembourgish uses a different case without 'in' or 'ago'
+        humanized = self.timeframes_only_distance[timeframe].format(trunc(abs(delta)))
+
+        return humanized

tests/test_arrow.py

@@ -2386,6 +2386,8 @@ def locale_list_no_weeks():
         "se-fi",
         "se-no",
         "se-se",
+        "lb",
+        "lb-lu",
     ]
 
     return tested_langs
@@ -2441,6 +2443,8 @@ def locale_list_with_weeks():
         "ms",
         "ms-my",
         "ms-bn",
+        "lb",
+        "lb-lu",
     ]
 
     return tested_langs

tests/test_locales.py

@@ -1740,3 +1740,28 @@ def test_plurals_mk(self):
         assert self.locale._format_timeframe("months", 11) == "11 ay"
         assert self.locale._format_timeframe("year", 1) == "bir yıl"
         assert self.locale._format_timeframe("years", 12) == "12 yıl"
+
+
+@pytest.mark.usefixtures("lang_locale")
+class TestLuxembourgishLocale:
+    def test_ordinal_number(self):
+        assert self.locale.ordinal_number(1) == "1."
+
+    def test_define(self):
+        assert self.locale.describe("minute", only_distance=True) == "eng Minutt"
+        assert self.locale.describe("minute", only_distance=False) == "an enger Minutt"
+        assert self.locale.describe("hour", only_distance=True) == "eng Stonn"
+        assert self.locale.describe("hour", only_distance=False) == "an enger Stonn"
+        assert self.locale.describe("day", only_distance=True) == "een Dag"
+        assert self.locale.describe("day", only_distance=False) == "an engem Dag"
+        assert self.locale.describe("week", only_distance=True) == "eng Woch"
+        assert self.locale.describe("week", only_distance=False) == "an enger Woch"
+        assert self.locale.describe("month", only_distance=True) == "ee Mount"
+        assert self.locale.describe("month", only_distance=False) == "an engem Mount"
+        assert self.locale.describe("year", only_distance=True) == "ee Joer"
+        assert self.locale.describe("year", only_distance=False) == "an engem Joer"
+
+    def test_weekday(self):
+        dt = arrow.Arrow(2015, 4, 11, 17, 30, 00)
+        assert self.locale.day_name(dt.isoweekday()) == "Samschdeg"
+        assert self.locale.day_abbreviation(dt.isoweekday()) == "Sam"