Nick Drew writes:
 > I'm a newbie zopista, and python for that matter...
 > In brief: I get a NameError when invoking "filter(...)" from DTML.  I thought this 
 >was a built-in python method, so I'm a bit puzzled.

For security reasons, Zope are removed all builtin-functions from
DTML expressions. You can access some of the builtin objects
as attributes/methods the special variable "_".

Look in the DTML reference (e.g. at URL:
for a list of available builtins in "_".


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