(no subject)

Hi all,
 
I'm developping a product, and in one of my form processing scripts, I'm having to handle a number of checkboxes with the same name, say,'boxname'.
 
In the context.REQUEST.form dictionary, I have this:
with only one box ticked, dict['boxname'] is 'value_of_the_box'
with multiple boxes ticked, dict['boxname'] is a list of these values
 
I'm trying to change the single string to a one-element list, however, I can't test the type of the value...
Whenever I try to use the __class__ attribute, my script won't compile in Zope ( "__class__ is an invalid attribute" ...)
Therefore I can't test whether I have a list or a string.
I would use isinstance(val,list), but 'list' seems to behave as though it was 'list()' inside Zope, instead of giving me <type 'list'>
 
Both these work in a python console... I'm obviously missing something, but what?
Is there a better way?
 
Thanks a lot,
Jonathan


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