Updated docs

src/cpl_translation/translation_service.py

@@ -7,12 +7,11 @@ from cpl_translation.translation_settings import TranslationSettings
 
 
 class TranslationService(TranslationServiceABC):
-
     def __init__(self):
         self._translation = {}
 
-        self._language = ''
-        self._default_language = ''
+        self._language = ""
+        self._default_language = ""
 
         TranslationServiceABC.__init__(self)
 
@@ -30,11 +29,11 @@ class TranslationService(TranslationServiceABC):
         self._language = lang
 
     def load(self, lang: str):
-        if not os.path.exists(f'translation/{lang}.json'):
+        if not os.path.exists(f"translation/{lang}.json"):
             raise FileNotFoundError()
 
         file_dict = {}
-        with open(f'translation/{lang}.json', 'r', encoding='utf-8') as file:
+        with open(f"translation/{lang}.json", "r", encoding="utf-8") as file:
             file_dict = json.load(file)
             file.close()
 
@@ -42,7 +41,7 @@ class TranslationService(TranslationServiceABC):
 
     def load_by_settings(self, settings: TranslationSettings):
         if settings is None:
-            raise Exception(f'{TranslationSettings.__name__} not loaded')
+            raise Exception(f"{TranslationSettings.__name__} not loaded")
 
         self._language = settings.default_language
         self._default_language = settings.default_language
@@ -51,9 +50,13 @@ class TranslationService(TranslationServiceABC):
             self.load(lang)
 
     def translate(self, key: str) -> str:
-        value = reduce(lambda d, key: d.get(key) if isinstance(d, dict) else None, key.split("."), self._translation[self._language])
+        value = reduce(
+            lambda d, key: d.get(key) if isinstance(d, dict) else None,
+            key.split("."),
+            self._translation[self._language],
+        )
 
         if value is None:
-            raise KeyError(f'Translation {key} not found')
+            raise KeyError(f"Translation {key} not found")
 
         return value