Python XPath scraping says list has no text attribute

I am using a code to scrape a PDF to generate a relevant dictionary. My code works when I access each text block individually, i.e

x = scraperwiki.pdftoxml(u.read())
    r = lxml.etree.fromstring(x)
    s = r.xpath('//page[@number="142"]/text[@left = "134"]')
    print s[8].text 

print s[0],s[1].. all seem to work but when I try the same for

x = scraperwiki.pdftoxml(u.read())
    r = lxml.etree.fromstring(x)
    s = r.xpath('//page[@number="142"]/text[@left = "134"]')
    print s[0:8].text

I get this error: AttributeError: 'list' object has no attribute 'text'

Can anyone tell me what's wrong?