fix: rename Ukrainian locale code from 'ua' to 'uk'

src/pendulum/locales/locale.py

@@ -16,6 +16,13 @@ class Locale:
 
     _cache: ClassVar[dict[str, Locale]] = {}
 
+    # Mapping of deprecated/incorrect locale codes to their correct
+    # replacement, kept for backwards compatibility.
+    _ALIASES: ClassVar[dict[str, str]] = {
+        "ua": "uk",  # Ukrainian: "ua" is an ISO 3166 country code (Ukraine),
+        # not the correct ISO 639 language code, which is "uk".
+    }
+
     def __init__(self, locale: str, data: Any) -> None:
         self._locale: str = locale
         self._data: Any = data
@@ -33,7 +40,7 @@ def load(cls, locale: str | Locale) -> Locale:
             return cls._cache[locale]
 
         # Checking locale existence
-        actual_locale = locale
+        actual_locale = cls._ALIASES.get(locale, locale)
         locale_path = cast(Path, resources.files(__package__).joinpath(actual_locale))
         while not locale_path.exists():
             if actual_locale == locale:

src/pendulum/locales/ua/custom.py → src/pendulum/locales/uk/custom.py

@@ -1,23 +1,23 @@
-"""
-ua custom locale file.
-"""
-from __future__ import annotations
-
-
-translations = {
-    "units": {"few_second": "кілька секунд"},
-    # Relative time
-    "ago": "{} тому",
-    "from_now": "за {}",
-    "after": "{0} посіля",
-    "before": "{0} до",
-    # Date formats
-    "date_formats": {
-        "LTS": "HH:mm:ss",
-        "LT": "HH:mm",
-        "L": "DD.MM.YYYY",
-        "LL": "D MMMM YYYY р.",
-        "LLL": "D MMMM YYYY р., HH:mm",
-        "LLLL": "dddd, D MMMM YYYY р., HH:mm",
-    },
-}
+"""
+uk custom locale file.
+"""
+from __future__ import annotations
+
+
+translations = {
+    "units": {"few_second": "кілька секунд"},
+    # Relative time
+    "ago": "{} тому",
+    "from_now": "за {}",
+    "after": "{0} посіля",
+    "before": "{0} до",
+    # Date formats
+    "date_formats": {
+        "LTS": "HH:mm:ss",
+        "LT": "HH:mm",
+        "L": "DD.MM.YYYY",
+        "LL": "D MMMM YYYY р.",
+        "LLL": "D MMMM YYYY р., HH:mm",
+        "LLLL": "dddd, D MMMM YYYY р., HH:mm",
+    },
+}