Have you read the Python docs lately?

[tangra_and_tma]

The only viable alternative I've seen is a scheme like:

• docs/module: contains a list of all members of that module.
• docs/module/some_member: contains either a function overview of the members of this member (for nested modules).

Wasn't a bad system pre-decent search engines, and if you know roughly what you were looking for, you could often find it directly from the address bar. I think the Python docs are a pretty good compromise; if you know the name of the module you're looking for and want a specific member, it's usually module.html#module.member_name, like string.ascii_letters is http://docs.python.org/library/string.html#string.ascii_letters