diff --git a/src/instructlab/sdg/llmblock.py b/src/instructlab/sdg/llmblock.py
index ebb90b54..dbb94c39 100644
--- a/src/instructlab/sdg/llmblock.py
+++ b/src/instructlab/sdg/llmblock.py
@@ -49,8 +49,7 @@ def __init__(
     def _parse(self, generated_string) -> dict:
         matches = {}
 
-
-        if self.parser_name is not None and self.parser_name == 'custom':
+        if self.parser_name is not None and self.parser_name == "custom":
             pattern = re.compile(self.parsing_pattern, re.DOTALL)
             all_matches = pattern.findall(generated_string)
             matches = {column_name: [] for column_name in self.output_cols}
@@ -63,15 +62,14 @@ def _parse(self, generated_string) -> dict:
                         matches[column_name].append(value)
             else:
                 matches[self.output_cols[0]] = (
-                        [match.strip() for match in all_matches] if all_matches else []
-                    )                
+                    [match.strip() for match in all_matches] if all_matches else []
+                )
         else:
             for start_tag, end_tag, output_col in zip(
                 self.block_config["start_tags"],
                 self.block_config["end_tags"],
                 self.output_cols,
             ):
-
                 if not start_tag and not end_tag:
                     matches[output_col] = (
                         generated_string.strip() if generated_string else None
@@ -165,7 +163,6 @@ def __init__(
                     **self._load_config(config)
                 )
 
-
     def _generate(self, samples, **gen_kwargs) -> str:
         if isinstance(self.prompt_template, dict):
             prompts = [