to

def taux():
            to=dict()
            a=response.selector.xpath('//strong').extract().strip()
            b=response.selector.xpath('//*[contains(concat( " ", @class, " " ), concat( " ", "text-right", " " ))]').extract().strip()
            for i in range(len(a)):
                clef=response.selector.xpath('//*[contains(concat( " ", @class, " " ), concat( " ", "col-xs-6", " " )) and (((count(preceding-sibling::*) + 1) = 1) and parent::*)]').extract()[i].strip()
                clef=clef[40:-5]
                o=response.selector.xpath('//strong').extract()[i].strip()
                o=o[8:-9]
 #               o=list(o)
                c=b[i]
                c=c[-12:-14]
                o.append(c)
                to[clef]=o
            return (u,v for u,v in to.items())