After receiving a snippet of python script, I finally decided to have a closer look at that language, and I was surprised how simple and comfortable it is. I think I'll like it! But: Where can I find a reference for the objects I can use in those scripts? I received the following snippet: try: my_index = context.dirIndex. except: my_index = 0 But I only want my_index to become 0 when the object and ONLY then object, i. e. without acquisition, has the prop dirIndex. s. th. like in DTML: <dtml-if "_.hasattr(aq_explicit,'dirIndex')"> Can anyone help me please? Where can I get information about python script? I looked at python.org, but didn't find what I was looking for... TIA -- Lars Heber, mailto:Lars.Heber@t-systems.de T-Systems, debis Systemhaus GEI GmbH, Geschaeftsstelle Sachsen