在XPath(lxml)中管理引号 [英] Manage quotation marks in XPath (lxml)
本文介绍了在XPath(lxml)中管理引号的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想从给定网站的制造概览"表中提取Web元素.但是该行的名称带有'(单引号).这干扰了我的语法.我该如何克服这个问题?该代码适用于其他行.
I want to extract web elements from the table 'MANUFACTURING AT A GLANCE' in the given website. But the name of the row has ' (single quote). This is interfering with my syntax. How do I overcome this issue? This code works for other rows.
import requests
from lxml import html, etree
ism_pmi_url = 'https://www.instituteforsupplymanagement.org/ismreport/mfgrob.cfm?SSO=1'
page = requests.get(ism_pmi_url)
tree = html.fromstring(page.content)
PMI_CustomerInventories = tree.xpath('//strong[text()="Customers' Inventories"]/../../following-sibling::td/p/text()')
PMI_CustomerInventories_Curr_Val = PMI_CustomerInventories[0]
推荐答案
这是我避免出现问题的方法. 也许这并不是您真正需要的,但是可以帮助您理解这个想法.
this is my approach to avoid your problem. maybe is not what you really need, but could help to you to get the idea.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import lxml.html
import re
import requests
import lxml.html
from pprint import pprint
def load_lxml(response):
return lxml.html.fromstring(response.text)
url = 'https://www.instituteforsupplymanagement.org/ismreport/mfgrob.cfm?SSO=1'
response = requests.get(url)
root = load_lxml(response)
headers = []
data = []
for index,row in enumerate(root.xpath('//*[@id="home_feature_container"]/div/div/div/span/table[2]/tbody/tr')):
rows = []
for cindex,column in enumerate(row.xpath('./th//text() | ./td//text()')):
if cindex == 1:
continue
column = column.strip()
if index == 0 or not column:
continue
elif index == 1:
headers.append(column)
else:
rows.append(column)
if rows and len(rows) == 6:
data.append(rows)
data.insert(0,headers)
pprint(data)
结果:
[['Series Index',
'Feb',
'Series Index',
'Jan',
'Percentage',
'Point',
'Change',
'Direction',
'Rate of Change',
'Trend* (Months)'],
['65.1', '60.4', '+4.7', 'Growing', 'Faster', '6'],
['62.9', '61.4', '+1.5', 'Growing', 'Faster', '6'],
['54.2', '56.1', '-1.9', 'Growing', 'Slower', '5'],
['54.8', '53.6', '+1.2', 'Slowing', 'Faster', '10'],
['51.5', '48.5', '+3.0', 'Growing', 'From Contracting', '1'],
['47.5', '48.5', '-1.0', 'Too Low', 'Faster', '5'],
['68.0', '69.0', '-1.0', 'Increasing', 'Slower', '12'],
['57.0', '49.5', '+7.5', 'Growing', 'From Contracting', '1'],
['55.0', '54.5', '+0.5', 'Growing', 'Faster', '12'],
['54.0', '50.0', '+4.0', 'Growing', 'From Unchanged', '1']]
[Finished in 2.9s]
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