Narwhals: For Pandas-to-Polars DataFrame Compatibility

[@Raiseren]

I didn't get. Why is it better to use this than simply pl.Dataframe(df) or df.to_pandas() in order to convert it back and forth?

[@marco_gorelli]

thanks for asking - check the part at 3:30. depending on the operation you're doing, it can make a massive performance difference to stay Polars-native (as opposed to converting to and from pandas)