New submission from Adrian Freund : PEP 634 structural pattern matching adds an auto-generated __match_args__ attribute to classes with the dataclass decorator and to namedtuples. This change is currently not documented in the dataclass and namedtuple documentation, nor is it mentioned in PEP 557 Data Classes. I would suggest adding mentions of this behaviour in those three places. Additionally I think adding a new parameter to switch off generating __match_args__ to dataclass should be considered, as everything else generated by dataclass can be switched off using a parameter. ---------- assignee: docs@python components: Documentation messages: 390413 nosy: brandtbucher, docs@python, freundTech, gvanrossum priority: normal severity: normal status: open title: Documenting dataclass and namedtuple changes for structural pattern matching versions: Python 3.10 _______________________________________ Python tracker https://bugs.python.org/issue43761 _______________________________________