[web2py] From ul to bootstrap row

[Annet]

In a view I have the following code to generate an ul:

<ul>
  {{for s in socialmedia:}}
    <li>
    </li>
  {{pass}}
</ul>

I use css to display two list items next to each other. To drop this css 
I'd like to replace this with bootstrap rows:

<div class="row-fluid">
  <div class="span6">
  </div> <!-- /span -->
  <div class="span6">
  </div> <!-- /span -->
</div> <!-- /row -->
<div class="row-fluid">
  <div class="span6">
  </div> <!-- /span -->
  <div class="span6">
  </div> <!-- /span -->
</div> <!-- /row -->

I think the solution lies in doing something with odd and even rows in 
socialmedia. In case of even do:

<div class="row-fluid">
  <div class="span6">
    {{=s.}}
  </div> <!-- /span -->

In case of odd do:

<div class="span6">
    {{=s.}}
  </div> <!-- /span -->
</div> <!-- /row -->

The problem is I don't know how to establish whether a row is odd or even, 
and how to close the last row in case socialmedia contains an odd number of 
rows.


Kind regards,

Annet.