Steve D'Aprano wrote of an incompleteness in this PEP This is not just some minor, trivial implementation issue, it cuts right
to the core of this feature's semantics [...]
For comparison, please look at the PEP for the statistics module. Steve wrote both PEP and the standard library module. In my opinion the PEP is deficient in its description of core semantics, and I don't see a reference implementation prior to acceptance. https://peps.python.org/pep-0450/ Of course, that was nearly 10 years ago. The recently discussed problems with type conversion in the statistics module together with what's missing in PEP 450 together support Steve's request that the PEP discussed in this thread be improved, so that we better avoid future problems. -- Jonathan