[Python-Dev] Breaking undocumented API

[Éric Araujo]

> We may also revisit the rules used by help() to decide what to include
> on the auto-generated module implementation.  Note that currently
> help() output excludes names not in __all__ is the module has __all__
> defined.  While I advocated this rule earlier in this thread, I now
> Consider the recent addition of open() to the tokenize module.  It
> was documented in the manual, but (wisely) excluded from tokenize.__all__.

I’m not sure this was on purpose.  Victor?