从（Edgar 10-K 文件）HTML 中提取文本部分

Question

我正在尝试从 HTML 文件中提取某个部分。具体来说，我查找 10-K 文件（某公司的美国业务报告）的“ITEM 1”部分。例如。： https://www.sec.gov/Archives/edgar/data/1591890/000149315218003887/form10-k.htm#a_002

问题：但是，我找不到“ITEM 1”部分，也不知道如何告诉我的算法从“ITEM 1”那个点搜索到另一个点（例如“ITEM 1A”）并提取其间的文本。

非常感谢您的帮助。

除其他外，我已经尝试过这个（和类似的），但我的bd 总是空的：

    try:
        # bd = soup.body.findAll(text=re.compile('^ITEM 1$'))
        # bd = soup.find_all(name="ITEM 1")
        # bd = soup.find_all(["ITEM 1", "ITEM1", "Item 1", "Item1", "item 1", "item1"])

        print(" Business Section (Item 1): ", bd.content)

    except:
        print("\n Section not found!")

使用 Python 3.7 和 Beautifulsoup4

问候赫卡

Answer 1

正如我在评论中提到的，由于 EDGAR 的性质，这可能对一个文件有效，但对另一个文件无效。不过，这些原则通常应该有效（经过一些调整......）

import requests
import lxml.html

url = 'https://www.sec.gov/Archives/edgar/data/1591890/000149315218003887/form10-k.htm#a_002'
source = requests.get(url)
doc = lxml.html.fromstring(source.text)

tabs = doc.xpath('//table[./tr/td/font/a[@name="a_002"]]/following-sibling::p/font')
#in this filing, Item 1 is hiding in a series of <p> tags following a table with an <a> tag with a 
#"name" attribute which has a value of "a_002"
flag = ''
for i in tabs:
    if flag == 'stop':
        break
    if i.text is not None: #we now start extracting the text from each <p> tag and move to the next
        print(i.text_content().strip().replace('\n',''))
    nxt = i.getparent().getnext()
    #the following detects when the <p> tags of Item 1 end and the next Item begins and then stops 
    if str(type(nxt)) != "<class 'NoneType'>" and nxt.tag == 'table':
        for j in nxt.iterdescendants():
           if j.tag == 'a' and j.values()[0]=='a_003':
                 # we have encountered the <a> tag with a "name" attribute which has a value of "a_003", indicated the beginning of the next Item; so we stop
                 flag='stop'           

输出是本文件中第 1 项的文本。

Answer 2

有特殊字符。先删除它们

import requests
from simplified_scrapy.simplified_doc import SimplifiedDoc 
html = requests.get('https://www.sec.gov/Archives/edgar/data/1591890/000149315218003887/form10-k.htm#a_002').text
doc = SimplifiedDoc(html)
doc.loadHtml(doc.replaceReg(doc.html, 'ITEM[\s]+','ITEM '))
item1 = doc.getElementByText('ITEM 1')
print(item1) # {'tag': 'B', 'html': 'ITEM 1. BUSINESS'}

# Here's what you might use
table = item1.getParent('TABLE')
trs = table.TRs
for tr in trs:
  print (tr.TDs)

如果你使用的是最新版本，可以使用以下方法

import requests
from simplified_scrapy.simplified_doc import SimplifiedDoc 
html = requests.get('https://www.sec.gov/Archives/edgar/data/1591890/000149315218003887/form10-k.htm#a_002').text
doc = SimplifiedDoc(html)
item1 = doc.getElementByReg('ITEM[\s]+1') # Incoming regex
print(item1,item1.text) # {'tag': 'B', 'html': 'ITEM\n    1. BUSINESS'} ITEM 1. BUSINESS

# Here's what you might use
table = item1.getParent('TABLE')
trs = table.TRs
for tr in trs:
  print (tr.TDs)