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Deprecate Expr for functions that take only specific literals #1496
Description
Is your feature request related to a problem or challenge? Please describe what you are trying to do.
This is the original comment that leads to this issue: #1484 (comment)
Describe the solution you'd like
Add deprecation warnings, then removeExpr type hint in a later release
Describe alternatives you've considered
Leave as is
Additional context
We only allow specific values, so we can check them at the function invocation.
Activity
kosiew commentedon Jul 13, 2026
Next Step
After the deprecation window, remove
Exprfrom type hints for confirmed literal-only/control arguments. This is a future-release cleanup and should only apply to arguments that already emittedDeprecationWarningin prior releases.