Thanks a lot! That led me to find this November thread: https://discuss.python.org/t/switch-pythons-parsing-tech-to-something-more-powerful-than-ll-1/379 http

Thanks a lot! That led me to find this November thread: https://discuss.python.org/t/switch-pythons-parsing-tech-to-something-more-powerful-than-ll-1/379 https://discuss.python.org/t/switch-pythons-parsing-tech-to-... And I posted here about it: https://www.reddit.com/r/ProgrammingLanguages/comments/brz2yj/switch_pythons_parsing_tech_to_something_more/ https://www.reddit.com/r/ProgrammingLanguages/comments/brz2y... It looks like the set and dict literals I noticed weren't so much the motivating use cases, but even more fundamentally assignments and keyword args!