UserWarning: Polars found a filename when using EagerPolarsDataset

[astrojuanlu]

Description

First reported at https://linen-slack.kedro.org/t/22699778/hi-everyone-i-just-upgrade-to-kedro-1-1-and-i-m-now-getting-#1f0022c7-f023-4f1f-b963-4410aae0e6d2

UserWarning: Polars found a filename. Ensure you pass a path to the file instead of a python file

Comes from:

kedro-plugins/kedro-datasets/kedro_datasets/polars/eager_polars_dataset.py

Lines 158 to 159 in 064c5d9

	with self._fs.open(load_path, **self._fs_open_args_load) as fs_file:
	return load_method(fs_file, **self._load_args)

Context

Nothing breaks, but it puzzles users and adds noise.

[astrojuanlu]

Similarly to #590, this comes because of how we use fsspec. But as explained in #625, we rely on fsspec because of our versioning capabilities.