Dask Expressions

Dask-expr provides a high-level expression system for Dask DataFrames, focusing on query optimization and improved organization. It became the default backend for `dask.dataframe` since Dask version 2024.3.0. The library, currently at version 2.0.0 (released January 21, 2025), is primarily maintained as part of the main Dask project, with its separate GitHub repository no longer actively maintained.