PEP 827: Split whether a param has a default out from "quals"#4979
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Q/.quals becomes K/.kind, and we add D/.default to track whether there is a default. It should be the type of the default if it exists, otherwise `Never`. Tracking the type here allows specifying a `Literal` in order to track a specific value, similar to what we support for `Member`. There is a possible follow-up to use an enum for the `ParamKind` instead of string literals but I'm not certain about it yet.
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703 files changed ·
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dnwpark
approved these changes
May 20, 2026
There is going to be a follow-up that makes all of these into enums. For reasons I now regret I decided to split the change.
1st1
approved these changes
May 23, 2026
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Q/.quals becomes K/.kind, and we add D/.default to track whether there
is a default. It should be the type of the default if it exists,
otherwise
Never. Tracking the type here allows specifying aLiteralin order to track a specific value, similar to what wesupport for
Member.There is a possible follow-up to use an enum for the
ParamKindinstead of string literals but I'm not certain about it yet.
PEP 123: Summary of changes)