other ways to check for <type 'function'>?

[Fredrik Lundh]

wittempj at hotmail.com wrote:

> A little experimentation shows that when something is not callable
> always a TypeError which evaluates to "'<type>' object is not
> callable"

that's not defined by the language specification, though, so your code 
won't be portable, and may break in future releases.

and even if you can live with that, you still cannot distinguish between 
non-callable objects and bugs *inside* the callables, unless you add 
traceback analysis to the exception handler.

</F>