fix: Fix remaining types in translator

Author: JanEbbing

deepl/api_data.py

@@ -279,7 +279,7 @@ def team_document(self) -> Detail:
         """Returns usage details for documents shared among your team."""
         return self._team_document
 
-    def __str__(self):
+    def __str__(self) -> str:
         details: List[Tuple[str, Usage.Detail]] = [
             ("Characters", self.character),
             ("Documents", self.document),
@@ -312,7 +312,7 @@ def __str__(self):
         return self.code
 
     @staticmethod
-    def remove_regional_variant(language: Union[str]) -> str:
+    def remove_regional_variant(language: Union[str, "Language"]) -> str:
         """Removes the regional variant from a language, e.g. EN-US gives EN"""
         return str(language).upper()[0:2]
 

deepl/translator.py

@@ -732,7 +732,12 @@ def translate_document_download(
         )
 
         if output_file:
-            for chunk in response.iter_content(chunk_size=chunk_size):
+            chunks = (
+                response.iter_content(chunk_size=chunk_size)
+                if isinstance(response, requests.Response)
+                else [response]
+            )
+            for chunk in chunks:
                 output_file.write(chunk)
             return None
         else: