python lxml报废给出空白结果

Question

我试过这个但得到空白的结果

import requests

from lxml import html

response=requests.get('http://www.convertit.com/Go/ConvertIt/Currency/Convert_All_Output.ASP?FCu=USD')

tree = html.fromstring(response.text)

print (tree.xpath('//div/table/tbody/tr[41]/td[1]/text()'))

Answer 1

就像Lol4t0在评论中所说，源中没有tbody。如果您将最后一行更改为

print (tree.xpath('//div/table/tr[41]/td[1]/text()'))

您将获得['62.525']的结果。