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Phew! Been a fun week or so for Wimsey (my data testing project), finished building out:

- Handy "validate or test" function (test or build a set of tests from the data)
- New tests for strings (matches regex, maximum/minimum length, category should be in, etc)
- Functionality for arbitrary narwhals expressions

Plus every time I blink Narwhals gets even better, so Pyspark and DuckDB are supported without me doing anything!

https://github.com/benrutter/wimsey