script question

[Scott David Daniels]

python at bdurham.com wrote:
> Scott,
> 
> Newbie question (and I'm not the OP): What are your thoughts on having
> your decorator add an attribute to the functions vs. placing the
> functions in a global variable?
> 
> def _included(f):
>     f._included = True
>     return f
> 
> I tried experimenting with this technique, but could not find a way to
> use dir() to discover all my functions with an _included attribute.
> 
> The following convoluted comprehension works to execute functions with
> an _included attribute when a list of function names is available....
> However, I can't figure out a way to replace my list of hard-coded
> function names with the output from the dir() command.

Here's how I'd do it:

     def call_all(module):
         for name in dir(module):
             contents = getattr(module, name)
             if hasattr(contents, '_included'):
                 yield contents()

--Scott David Daniels
Scott.Daniels at Acm.Org