[Zope] Do-it-yourself acquisition -- is there an easier way?

[VanL]

Hello,

I have python products and python scripts in which I am trying to get a 
certain object, by id, from higher up in the acquisition chain.

I know that this object is in a folder named 'toolbox', so the code I 
have is as follows:

   def get_foo(self, fooID):
       default_foo = None
       for parentObj in self.aq_chain:
           try:
               toolbox = parentObj._getOb('toolbox')
               foo = toolbox._getOb(fooID)
               return foo
           except: continue
       return default_foo

This works, but seems very clunky.  Is there an API call that is 
cleaner?  Does the method above have a hidden danger or difficulty that 
I am not seeing?

Thanks,

VanL