[ZPT] Structural Logic: Really, It Is...

[beno]

Hi;
Although several have tried to help me with this problem, it still remains 
unsolved, so I'll restate it. I have the following code:

<font style="font" tal:attributes="style 
python:here.sizeCalc(44,here.size(None,  here))" >

This is Page Template <em tal:content="template/id">template id</em>.</font>

]]or, alternately... [[

<el tal:define="fsize python:here.sizeCalc(44, here.size(None, here))"
     tal:attributes="style string:font-size: ${fsize};" >

This is Page Template <em tal:content="template/id">template id</em>.</el>

However, neither of these render what I'm trying to accomplish, namely, 
changing the font size by calling a python script (sizeCalc) and passing a 
variable (size) as a parameter. What am I missing?
TIA,
beno