diff --git a/py-polars/polars/io/delta.py b/py-polars/polars/io/delta.py
index 0970eb134d88..b45cc66608aa 100644
--- a/py-polars/polars/io/delta.py
+++ b/py-polars/polars/io/delta.py
@@ -316,8 +316,7 @@ def _get_delta_lake_table(
 def _check_if_delta_available() -> None:
     if not _DELTALAKE_AVAILABLE:
         raise ModuleNotFoundError(
-            "deltalake is not installed"
-            "\n\nPlease run: pip install deltalake>=0.9.0"
+            "deltalake is not installed\n\nPlease run: pip install deltalake>=0.9.0"
         )
 
 
diff --git a/py-polars/polars/utils/_construction.py b/py-polars/polars/utils/_construction.py
index b22cd7ac3842..d6417d15f1a2 100644
--- a/py-polars/polars/utils/_construction.py
+++ b/py-polars/polars/utils/_construction.py
@@ -1061,9 +1061,7 @@ def _sequence_of_sequence_to_pydf(
         ]
         return PyDataFrame(data_series)
 
-    raise ValueError(
-        f"`orient` must be one of {{'col', 'row', None}}, got {orient!r}"
-    )
+    raise ValueError(f"`orient` must be one of {{'col', 'row', None}}, got {orient!r}")
 
 
 @_sequence_to_pydf_dispatcher.register(tuple)