[Zope] ZPT nebie questions

[Charlie Reiman]

I'm in the middle of trying to reimplement some DTML stuff in ZPT and I'm
hitting what must be newbie problems.

1) Iteration and python expressions.

I've got something like this:

    <table class="info" width="100%"
    tal:repeat="origin python:here.getorigins(
      fd=request.other['from_date'],
      td=request.other['to_date'])">

I then want to nest another repeat statement, based on origin:

<tr class="somerow"
 tal:repeat="row python:here.innerstuff(
 request.other['from_date'],
 request.other['to_date'],
 origin)">    <!-- this line is borked -->

Using 'origin' here fails, as does 'repeat.origin' or 'repeat.origin.origin'
(the actual attribute I'm trying to get to) or 'repeat['origin'].origin'.
What is the chant I need to access repeat variables from python expressions?

2) Whither 'fmt='?

I know this was answered but my search hasn't turned up any answer. I used
to do this:

<td class="num"><dtml-var hits fmt="%d"></td>
<td class="num"><dtml-var ratio fmt="%.1f">%</td>

This works in ZPT:

<td class="num"
  tal:content="python:'%d' % int(row.hits)">0.0</td>
<td class="num"
  tal:content="python:('%.1f' % float(row.ratio))+'%'">0.0%</td>

But it seems like there should be an easier way.