[Zope] DTML-stuff calling from Python Script

[bogdan@iuveno-net.de]

Hello.

How to call an DTML Method from Python Script? It could be same as from
DTML stuff: <dtml-var somewhere.script(value)> or <dtml-call expr="...">

But vice versa (dtml-method from script) always fails in anyway:
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print context.doc_here
return printed
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Works, but just prints the source (not parses)

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return context.doc_here(_,_)
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Fails with "guarded_getattr"

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return context.doc_here(_)
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Fails with "standard_html_header" (key_error)

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return context.doc_here
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Works, but just prints the source (quoted, not parses)

Anybody know how to call it? Documentation claims, that it should work.
But it does not.

P.S. Namespace defined as well.

--
Sincerely yours, 
    Bogdan M.Maryniuck