Question

我希望尽可能以一种通用的方式从工作规范中提取工资信息（考虑到工资的多种方式可以指定工资（有或没有'薪水'这个词在它之前，我们没有尾随零，范围等。）

采用三种不同的工作规范，我使用urllib2获取HTML，然后对“每个工资”一词执行初始不区分大小写的grep。结果差别很大（原谅Jupyter不太漂亮的糊状物）：

In [52]:

urllib2
Out[52]:
<module 'urllib2' from '/Users/Evan/anaconda/lib/python2.7/urllib2.pyc'>
In [82]:

案例＃1

reponse = urllib2_urlopen('http://apply.ovoenergycareers.co.uk/vacancies/453/cro-manager/london/')
In [83]:

content = reponse.read()
In [84]:

save_html('salarygrep1', content)
In [59]:

!grep -i salary salarygrep1.html
!grep -i salary salarygrep1.html
  <dt class="field_salary">Salary</dt>
  <dd class="value_salary">
In [86]:

with open('salarygrep1.html') as s:
    for line in s:
        if 'salary' in line.lower():
            print line
  <dt class="field_salary">Salary</dt>

  <dd class="value_salary">

In [79]:

案例＃2

reponse = urllib2_urlopen('http://apply.ovoenergycareers.co.uk/vacancies/475/ovo-telesales-agent/bristol/')
In [80]:

content = reponse.read()
In [81]:

save_html('salarygrep2', content)
In [63]:

!grep -i salary salarygrep2.html
  <dt class="field_salary">Salary</dt>
  <dd class="value_salary">
    Salary: �18,000 + benefits & competitive commission scheme; OTE range: �20,500 - �30,000
In [87]:

with open('salarygrep2.html') as s:
    for line in s:
        if 'salary' in line.lower():
            print line

  <dt class="field_salary">Salary</dt>

  <dd class="value_salary">

    Salary: �18,000 + benefits & competitive commission scheme; OTE range: �20,500 - �30,000

In [88]:

案例＃3

reponse = urllib2_urlopen('https://gs7.globalsuccessor.com/centrica02/tpl_centrica02.asp?s=4A515F4E5A565B1A&jobid=48490,2356610248&key=21798303&c=028859657862&pagestamp=dbykvxmmwfnblykbqc')
In [89]:

content = reponse.read()
In [90]:

save_html('salarygrep3', content)
In [67]:

!grep -i salary salarygrep3.html
!grep -i salary salarygrep3.html
<p id="igSoundBite"><em><div>Salary: &#163;28-&#163;38K depending on experience</div></em></p><h3 id="igJobDesc0">Job Description</h3><p><div>Assistant Product Development Manager </div>
In [95]:

with open('salarygrep3.html') as s:
    for line in s:
        if 'salary' in line.lower():
            print line
<p id="igSoundBite"><em><div>Salary: &#163;28-&#163;38K depending on experience</div></em></p><h3 id="igJobDesc0">Job Description</h3><p><div>Assistant Product Development Manager </div>

In [70]:

案例＃4

reponse = urllib2_urlopen('http://jobs.emounlimited.com/senior-digital-project-manager/')
In [71]:

content = reponse.read()
In [72]:

save_html('salarygrep4', content)
In [94]:

!grep -i salary salarygrep4.html
In [92]:

with open('salarygrep4.html') as s:
    for line in s:
        if 'salary' in line.lower():
            print line
In [ ]:

在＃1的情况下，实际工资是不同的<div>，而不是。{ 得到了所有。
如果是＃2，工资确实被检测到，但（i）这是一个需要处理的范围，以及（ii）有非ASCII货币字符（UK£）。
如果是＃3，工资也会被检测到但是（i）这是一个需要处理的范围，以及（ii）有非ASCII货币字符（UK£）。
如果因为指定了工资但未提及“薪水”一词，则不会检测到任何内容。

如果认为页面设计和工资规格的差异很大，那么一个适合所有人（或一个尺寸最适合）的正则表达式或正则表达式的组合可能会起到作用，这是不合理的吗？如果没有，我将如何构建它/他们？或者，是否有一种Python方法可以减少对正则表达式的依赖？

Answer 1

这是一个想法：

通过BeautifulSoup
获取body元素的文本（我们对其余元素不感兴趣）
使用正则表达式，选择金额

代码：

# -*- coding: utf-8 -*-
import re

import requests
from bs4 import BeautifulSoup

urls = [
    "http://apply.ovoenergycareers.co.uk/vacancies/453/cro-manager/london/",
    "http://apply.ovoenergycareers.co.uk/vacancies/475/ovo-telesales-agent/bristol/",
    "https://gs7.globalsuccessor.com/centrica02/tpl_centrica02.asp?s=4A515F4E5A565B1A&jobid=48490,2356610248&key=21798303&c=028859657862&pagestamp=dbykvxmmwfnblykbqc",
    "http://jobs.emounlimited.com/senior-digital-project-manager/"
]

money_pattern = re.compile(ur"($|£)([0-9.,]+K?)(?:\s*-\s*(?:$|£)*([0-9.,]+K?)*)*")
for url in urls:
    soup = BeautifulSoup(requests.get(url).text, "html.parser")
    text = soup.body.text

    print("URL: " + url)
    for currency, amount1, amount2 in money_pattern.findall(text):
        if not amount1 and not amount2:
            continue

        if not amount2:
            print("Single amount found: %s, currency: %s" % (amount1, currency))
        else:
            print("Range found: %s - %s, currency: %s" % (amount1, amount2, currency) )
    print("------")

输出：

URL: http://apply.ovoenergycareers.co.uk/vacancies/453/cro-manager/london/
Range found: 40,000 - 50,000, currency: £
------
URL: http://apply.ovoenergycareers.co.uk/vacancies/475/ovo-telesales-agent/bristol/
Single amount found: 18,000, currency: £
Range found: 20,500 - 30,000, currency: £
------
URL: https://gs7.globalsuccessor.com/centrica02/tpl_centrica02.asp?s=4A515F4E5A565B1A&jobid=48490,2356610248&key=21798303&c=028859657862&pagestamp=dbykvxmmwfnblykbqc
Range found: 28 - 38K, currency: £
------
URL: http://jobs.emounlimited.com/senior-digital-project-manager/
Range found: 36 - 40,000, currency: £
------

希望这至少可以让你开始。

从不同结构和薪水表示法的HTML工作规范中提取工资

1 个答案: