fix: improve formatting and error message clarity in file operations

Author: pkontek

src/PowerPlatform/Dataverse/client.py

@@ -706,7 +706,7 @@ def delete_file(
 
 
         :return: None
-        :raises ~PowerPlatform.Dataverse.core.errors.HttpError: If the delete fails 
+        :raises ~PowerPlatform.Dataverse.core.errors.HttpError: If the delete fails
 
         Example:
             Delete a file::
@@ -725,7 +725,7 @@ def delete_file(
             record_id,
             file_name_attribute,
         )
-    
+
     # Cache utilities
     def flush_cache(self, kind) -> int:
         """

src/PowerPlatform/Dataverse/data/_file_operations.py

@@ -195,12 +195,14 @@ def _download_file(
 
         key = self._format_key(record_id)
         url = f"{self.api}/{entity_set}{key}/{file_name_attribute}/$value"
-        response = self._request("get", url, expected=(200,)) 
-        file_name = response.headers.get('x-ms-file-name')
+        response = self._request("get", url, expected=(200,))
+        file_name = response.headers.get("x-ms-file-name")
         if file_name is None:
-            raise ValueError("Response is missing the 'x-ms-file-name' header. The file column may be empty or the server did not return the expected header.")
+            raise ValueError(
+                "Response is missing the 'x-ms-file-name' header. The file column may be empty or the server did not return the expected header."
+            )
         return file_name, response.content
-    
+
     def _delete_file(
         self,
         entity_set: str,
@@ -218,6 +220,6 @@ def _delete_file(
 
         key = self._format_key(record_id)
         url = f"{self.api}/{entity_set}{key}/{file_name_attribute}"
-        self._request("delete", url, expected=(204,)) 
+        self._request("delete", url, expected=(204,))
 
-        return None
+        return None