<% n = 0 %> % for item in stocks: <% n += 1 if n % 2: row_class = 'odd' else: row_class = 'even' %> ${n} ${item['symbol']} ${item['name']} ${item['price']} % if item['change'] < 0.0 : ${item['change']} ${item['ratio']} % else : ${item['change']} ${item['ratio']} % endif % endfor