I want to test that two Polars DataFame objects are equivalent, that contain a column which represents dates. If I use datetime.date from the standard library I don't have any problems: import datetime as dt import polars as pl from polars.testing import assert_frame_equal assert_frame_equal(pl.DataFrame({"foo": [1], "bar": [dt.date(2000, 1, 1)]}), pl.DataFrame({"foo": [1], "bar": [dt.date(2000, 1, 1)]})) But if I try to use the Date type from polars the comparison fails, with a PanicException: not implemented exception. assert_frame_equal(pl.DataFrame({"foo": [1], "bar": [pl.Date(2000, 1, 1)]}), pl.DataFrame({"foo": [1], "bar": [pl.Date(2000, 1, 1)]})) Is there a way to use the polars Date type in the DataFrame and still be able to compare the two objects? Continue reading...