Mark get_supported_languages as static method

deep_translator/deepl.py

@@ -62,11 +62,12 @@ class DeepL(object):
 
     def translate_batch(self, batch, **kwargs):
         """
-        @param batch: list of texts to translate
+        @param batch: list of texts to translate    
         @return: list of translations
         """
         return [self.translate(text, **kwargs) for text in batch]
 
+    @staticmethod
     def get_supported_languages(**kwargs):
         return [*DeepL._languages.keys()]
 

deep_translator/qcri.py

@@ -38,6 +38,7 @@ class QCRI(object):
         except Exception as e:
             raise e
 
+    @staticmethod
     def get_supported_languages(**kwargs):
         # Have no use for this as the format is not what we need
         # Save this for whenever