pandas added a copy-on-write API in 2.0, so under the hood the Arrow columns are still effectively immutable. https://pandas.pydata.org/docs/dev/whatsnew/v2.0.

pandas added a copy-on-write API in 2.0, so under the hood the Arrow columns are still effectively immutable. https://pandas.pydata.org/docs/dev/whatsnew/v2.0.0.html#copy-on-write-improvements https://pandas.pydata.org/docs/dev/whatsnew/v2.0.0.html#copy...