Currently, when @deprecated() is below @deprecate_renamed_parameter(), it does not issue (print) a deprecation warning. So, for example, this would not issue a warning (when it should):

@deprecate_renamed_parameter()
@deprecate_renamed_parameter()
@deprecated()

While moving @deprecated() to the top of the group will:

@deprecated()
@deprecate_renamed_parameter()
@deprecate_renamed_parameter()

This was outlined in #26479. A temporary fix was implemented in #26530.

The solution should allow the deprecation decorators to be applied in any order and still work.

Resources:

• The Polars deprecation functionality can be found at py-polars/src/polars/_utils/deprecation.py.