>>> from snowflake.snowpark.functions import to_variant, is_object
>>> df = session.create_dataframe([[[1, 2], {"a": "snow"}]], schema=["a", "b"])
>>> df.select(is_object(to_variant("a")).as_("a"), is_object(to_variant("b")).as_("b")).collect()
[Row(A=False, B=True)]