[Zope] objectValues return value

[Brian Lloyd]

> I wrote a script the returns a list object of all title_or_id 
> values of objects in a folder.  The problem is when there are no 
> objects in the folder.  The script should return a list 
> contianing the string 'none'.. but doesn't.  In fact, the script 
> seems to either hang or have no return value...  
> 
> Any pointers?
> 
> # returns a python list contained the title of the page templates 
> in this folder
> list = context.objectValues('Page Template')
> if list == None:
>    return ['none']
> newlist = []
> for zpt in list:
>    newlist.append(zpt.title_or_id())
> return newlist

The objectValues method should return an empty list if the 
collection is empty, not None. Try:

list = context.objectValues('Page Template')
if not list:
    return ['none']