I conducted an empirical study about the usefulness of the python assignment expression. Unfortunately, this began in February 2020, so data collection became a challenge really quickly.,(reply>), As far as the usefulness of language features, I might add that this study was conducted under the guidance of Andreas Stefik, who has taken an evidence-based approach in constructing a language targeting comprehension backed by years of empirical findings. It is constructed in such a way to be useful for those with disabilities as well. The language is Quorum if you are interested in checking it out.