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[sixdimensional]

May I humbly submit “parsing expression grammars”[1] for your consideration?

Fairly simple and somewhat fun.. Python has PEG parsing built in, but also the pyparsing or parsimonious modules too.

I have built EDI X12 parsers and toy languages with this.

[1] https://en.wikipedia.org/wiki/Parsing_expression_grammar

[sixdimensional → sixdimensional]

Also lark in Python too