Yes, use the "exists:" TAL expression. So you would do: <span tal:condition="exists: here/request/results" /> or something like that ... More info in the ZPT reference ... J.F. -----Original Message----- From: zope-bounces@zope.org [mailto:zope-bounces@zope.org]On Behalf Of Andre Meyer Sent: Monday, March 15, 2004 5:41 AM To: Zope List Subject: [Zope] hasattr in tal:condition Dear Zopers Is it the case that it is not possible to make use of hasattr within a tal:condition statement? In a ZPT I need to test whether an attribute of here/request is set or not. Unfortunately, this raises an exception, which is exactly what I want to prevent... Here is what the test looks like: <span tal:condition="python:test(hasattr(request, results), 1, 0)">span</span> Is there a better way to achieve the same? thanks and regards Andre PS in the full version the statement looks as follows: <body tal:define="results python:test(hasattr(request, results), request.results, here.Catalog()); ... > _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )