我希望尽可能以通用的方式从工作规范中提取薪水信息(考虑到可以指定薪水的多种方式(前面有或没有“薪水”一词,我们没有尾随零、范围等)
采用三种不同的工作规范,我用 urllib2
获取 HTML , 然后执行一个不区分大小写的初始 grep
对于“每个人的薪水”一词。结果差异很大(请原谅 Jupyter 的不太漂亮的粘贴):
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: £28-£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: £28-£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 [ ]:
- 在案例 #1 中,实际工资在不同的
<div>
中, 而不是 被捡起来。 - 在情况 #2 中,确实检测到了薪水,但 (i) 这是一个需要处理的范围,并且 (ii) 存在非 ASCII 货币字符(英国英镑)。
- 在案例 #3 中,薪水也被检测到,但 (i) 它是一个需要处理的范围,并且 (ii) 存在非 ASCII 货币字符(英国英镑)。
- 以防万一,因为指定了薪水但没有提到“薪水”这个词,所以没有检测到任何东西。
考虑到页面设计和薪水规范的广泛差异,认为通用(或通用)正则表达式或正则表达式组合可能会成功,这是否不合理?如果没有,我将如何构建它/它们?或者实际上,是否有一种 Python 方法可以减少对正则表达式的依赖?
最佳答案
这是一个想法:
- 通过
BeautifulSoup
传递页面的 HTML - 获取
body
元素的文本(我们对其余部分不感兴趣) - 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: £
------
希望这至少能让您入门。
关于python - 从不同结构和工资符号的 HTML 工作规范中提取工资,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35463202/