Question

我有两个xpath，其中只有一个正确地从下面的url中提取作业标题。任何想法为什么xpath1（我发现使用＆＃39;检查元素/复制XPath＆＃39;功能的Chrome）不起作用，而xpath2呢？

import requests
from lxml import html

url = 'http://www.mynextmove.org/find/browse?c=54'

xpath1 = '//*[@id="content"]/table[1]/tbody/tr/td[1]/a/text()'
xpath2 = '//a[contains(@href, "profile")]/text()'

page = requests.get(url)
tree = html.fromstring(page.text)

jobs = tree.xpath(xpath2)
print 'jobs:', jobs

xpath1返回[]，空列表。

xpath2返回[＆＃39;人类学家＆＃39;＆＃39;考古学家＆＃39;，...]

Answer 1

似乎没有tbody将其更改为：

`xpath1 = '//*[@id="content"]/table[1]/tr/td[1]/a/text()'`

试一试。

当我这样做时，这就是我得到的：

In [31]: tree.xpath(xpath1)
Out[31]:
['Anthropologists',
 'Archeologists',
 'Architects',
 'Architectural Drafters',
 'Biochemists & Biophysicists',
 'Civil Drafters',
 'Civil Engineers',
 'Environmental Engineering Technicians',
 'Environmental Engineers',
 'Geodetic Surveyors',
 'Lawyers',
 'Legal Secretaries',
 'Mapping Technicians',
 'Marine Architects',
 'Marine Engineers',
 'Paralegals & Legal Assistants',
 'Survey Researchers',
 'Surveying Technicians',
 'Surveyors',
 'Tax Preparers',
 'Transportation Engineers',
 'Veterinarians',
 'Veterinary Assistants & Laboratory Animal Caretakers',
 'Veterinary Technologists & Technicians',
 'Water/Wastewater Engineers']

lxml xpath找不到锚文本

1 个答案: