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Wish there was an error message

Thomas Wouters thomas at xs4all.net
Sat Feb 3 21:05:04 EST 2001 
On Sat, Feb 03, 2001 at 12:39:57AM -0000, kwasi007uk at yahoo.co.uk wrote:

> But M.quit does not exist. So it should give me an error message? Why 
> doesn't it? Can I turn it on somehow?

M.quit does exist. It's a function or method object. M.quit is simply an
attribute access, which yields the object that is 'stored' in the 'quit'
attribute of 'M'. If you then 'call' that object, using ()'s, you execute
the code. This would do exactly the same:

  q = M.quit
  q()

As would

  getattr(M, "quit")()

There is nothing special about functions or methods, they are just objects
like everything else. In fact, you can create your own class that behaves
just like a function, by supplying a __call__ method.

-- 
Thomas Wouters <thomas at xs4all.net>

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