$ n = 0 $for item in stocks: $ n = n + 1 $ klass = ((n % 2) and 'odd') or 'even' $:n $:item['symbol'] $:item['name'] $:item['price'] $if item['change'] < 0.0: $:item['change'] $:item['ratio'] $else: $:item['change'] $:item['ratio'] $# $#