[mod_python] PSP (exit/quit/return statement)

Hello, there is an exit, quit, abort or return like statement for psp ?
For example, I want to do that:

<%
req.write("1")
[exit statement]
req.write("2")
%>

in a way that the statement abort the flow of execution and the result be:
1

I have been read the documentation and don't found anything like that.

Thank you,
- Christian

-- 
Christian S. Perone - christian_perone at gmail dot com
"The effect of music is so very much more powerful and penetrating than is
that of the other arts, for these others speak only of the shadow, but music
of the essence."
- Schopenhauer, Vol. I, Chapter III, The World As Representation
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