I'm finding myself using custom test functions a lot, many of which are nearly identical, and writing the same lambda function over and over is getting tedious.

It'd be really handy if one could pass additional arguments to these functions, so that one could do this:

def case_insensitive_match(a, b):    return a.casefold() == b.casefold()db.where('value').test(case_insensitive_match, my_val)db.where('value').test(case_insensitive_match, my_other_val)

If you're keen on having this ability too, I'd be happy to code it up and submit a pull request.

P.S. Just discovered this library, and love it so far!