diff --git a/features/tabular-statistics-tool/src/polus/tabular/features/tabular_statistics/tabular_statistics.py b/features/tabular-statistics-tool/src/polus/tabular/features/tabular_statistics/tabular_statistics.py
index dfe2f19..49261f8 100644
--- a/features/tabular-statistics-tool/src/polus/tabular/features/tabular_statistics/tabular_statistics.py
+++ b/features/tabular-statistics-tool/src/polus/tabular/features/tabular_statistics/tabular_statistics.py
@@ -411,6 +411,7 @@ def preview(out_dir: Path, file_pattern: str) -> None:
     out_json: dict[str, Any] = {
         "filepattern": file_pattern,
         "outDir": str(out_name),
+        
     }
     with Path(out_dir, "preview.json").open("w") as jfile:
         json.dump(out_json, jfile, indent=2)
diff --git a/features/tabular-statistics-tool/tests/test_main.py b/features/tabular-statistics-tool/tests/test_main.py
index 024643b..26a6b4e 100644
--- a/features/tabular-statistics-tool/tests/test_main.py
+++ b/features/tabular-statistics-tool/tests/test_main.py
@@ -87,7 +87,9 @@ def test_apply_statistics() -> None:
         d1 = Generatedata(file_pattern=i, out_name=f"data_1{i}")
         d1()
         table = pa.table(d1.df)
-        numeric_table = table.drop([col for col in table.column_names if pa.types.is_string(table[col].type)])
+        numeric_table = table.drop(
+            [col for col in table.column_names if pa.types.is_string(table[col].type)]
+        )
         statistics_list = list(ts.STATS.keys())
 
         # Test applying each statistic in STATS to the table
@@ -113,7 +115,9 @@ def test_all_statistics() -> None:
         d1 = Generatedata(file_pattern=i, out_name=f"data_1{i}")
         d1()
         table = pa.table(d1.df)
-        numeric_table = table.drop([col for col in table.column_names if pa.types.is_string(table[col].type)])
+        numeric_table = table.drop(
+            [col for col in table.column_names if pa.types.is_string(table[col].type)]
+        )
         statistics = "all"
         result_table = ts.apply_statistics(numeric_table, statistics=statistics)