Improve sqlite Aggregration Protocols#15188
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max-muotoforce-pushed the fix-aggregration-protocols branch from 6f5bc08 to ef3dc7dCompare
max-muoto commented Dec 30, 2025
| # And for num_params = -1, which means the aggregate must accept any number of parameters. | ||
| @overload | ||
| defcreate_window_function( | ||
| self, name: str, num_params: Literal[-1], aggregate_class: Callable[[], _AnyParamWindowAggregateClass] |None, / |
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We shouldn't necessarily enforce usage of *args in the any params case.
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max-muotoforce-pushed the fix-aggregration-protocols branch from 199a193 to 8adf710CompareContributor
According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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This PR resolves#12141 and improves the typing for
create_aggregateby:n_arg=1case that the protocol only accepts a single argument forstepandinverse, and a separate protocol accepting N arguments when given a positive integer value or -1. Properties withCallable[..., object]are used in order to allow the implementer to accept any number of named positional or key-word arguments._SingleParamWindowAggregateClassand_AnyParamWindowAggregateClass).This is primarily a re-open of #12192 addressing the issues called out in https://github.com/python/typeshed/pull/12192/changes#r1651411242. Looking back on this PR, the return-types were too strict as well, there's not necessarily a strict requirement that the return types match the input types so we avoid using generics for returns as well now.