PEP 843: Export Statement for DRY Re-exports

[guido (Guido van Rossum)]

@NeilGirdhar

One question the PEP leaves open: should export * require the source module to define its own __all__, or fall back to import *'s behavior? Feedback on that specifically is welcome.

I feel it should behave the same as import *. Why introduce an exception that’s going to trip someone over?