Xdiv计数/ div中的svg元素

Question

Cant get a list of specific SVG elements in div

With For cycle all is perfect, but XPath count is strange for me.

from lxml import html
import requests

race_link = 'https://www.racingtv.com/racecards/bath/244519-visit-four-from-the-top-at-valuerater-co-uk-apprentice-handicap-5?'

race_page = requests.get(race_link)
act_race = html.fromstring(race_page.content)

name_horses = act_race.xpath('//div[@class="racecard__runner__column racecard__runner__name"]/a/text()')
star_horses = act_race.xpath('//div[@class="timeform__stars timeform__rating--alone"]')

print('--------------------')

for(hrs,star) in zip(name_horses,star_horses):
    st = star.xpath('count(svg[@class="svg svg-star_filled  svg--on"])')
    print ('name: {0:<30}stars: {1:<5}'.format(hrs,st))

print(name_horses)
print('--------------------')
print(star_horses)
# stars_list = act_race.xpath('//div[@class="timeform__stars timeform__rating--alone"]/count(svg[@class="svg svg-star_filled  svg--on"])')
# print('stars_list',stars_list)

in the last 2 commented line want to made 1 list (stars_list), but always got error message "Invalid Expression". This drives me crazy, help me guys! Thanks a lot

Answer 1

Given list comprehension in Python, I think you could rewrite the pure but XPath 2.0 attempt

stars_list = act_race.xpath('//div[@class="timeform__stars timeform__rating--alone"]/count(svg[@class="svg svg-star_filled  svg--on"])')

to using XPath 1 twice in a list comprehension:

stars_list = [div.xpath('count(svg[@class="svg svg-star_filled  svg--on"])') for div in act_race.xpath('//div[@class="timeform__stars timeform__rating--alone"]')]

That should give a list of the count of svg elements of each div .