try fix

py-polars/polars/io/parquet/functions.py

@@ -106,8 +106,6 @@ def read_parquet(
         benchmarking the parquet-reader as `rechunk` can be an expensive operation
         that should not contribute to the timings.
     """
-    storage_options = storage_options or {}
-
     if use_pyarrow:
         if not _PYARROW_AVAILABLE:
             raise ModuleNotFoundError(
@@ -120,6 +118,7 @@ def read_parquet(
         import pyarrow.parquet
 
         pyarrow_options = pyarrow_options or {}
+        storage_options = storage_options or {}
 
         # TODO: Update _prepare_file_arg to handle list[Path] input
         with _prepare_file_arg(
@@ -137,6 +136,8 @@ def read_parquet(
             )
 
     if isinstance(source, (BinaryIO, BytesIO, bytes)):
+        storage_options = storage_options or {}
+
         with _prepare_file_arg(
             source, use_pyarrow=use_pyarrow, **storage_options
         ) as source_prep:

py-polars/polars/lazyframe/frame.py

@@ -450,6 +450,9 @@ def _scan_parquet(
         if storage_options is not None:
             storage_options = list(storage_options.items())  #  type: ignore[assignment]
 
+        print(source)
+        print(storage_options)
+
         self = cls.__new__(cls)
         self._ldf = PyLazyFrame.new_from_parquet(
             source,