It's an old argument. I don't have real strong feelings about it. I think there is enough code doing one or the other out there that the end result is to understand well the ramifications of both, so it ends up a matter of taste.

The documentation is pretty clear about it:

http://docs.python.org/release/3.3.4/library/stdtypes.html#t...

Which leads to this:

    >>> a=object()
    >>> bool(a)
    True
    >>>