使用 Python 提取包含给定单词的标签之间的文本答案

【问题标题】：Extract text between tags containing a given word using Python使用 Python 提取包含给定单词的标签之间的文本
【发布时间】：2019-01-24 16:29:14
【问题描述】：

我有一些来自 XML 文档的文本，我试图在其中提取包含某些单词的标签中的文本。

例如：

search('adverse')

应该返回包含单词'adverse'的所有标签的文本

Out: 
  [
    "<item>The most common adverse reactions reported in subjects receiving coadministered dutasteride and tamsulosin were impotence, decreased libido, breast disorders (including breast enlargement and tenderness), ejaculation disorders, and dizziness.</item>"
  ]

和search('clinical')

应该返回两个结果，因为两个标签包含这些词。

Out: 
  [
    "<title>6.1 Clinical Trials Experience</title>", 
    "<paragraph id="ID41">The clinical efficacy and safety of coadministered dutasteride and tamsulosin, which are individual components of dutasteride and tamsulosin hydrochloride capsules, have been evaluated in a multicenter, randomized, double-blind, parallel group trial (the Combination with Alpha-Blocker Therapy, or CombAT, trial) </paragraph>"
  ]

为此我应该使用什么工具？正则表达式？ BS4？非常感谢任何建议。

示例文本：

 </highlight>
 </excerpt>
 <component>
 <section id="ID40">
 <id root="fbc21d1a-2fb2-47b1-ac53-f84ed1428bb4"></id>
 <title>6.1 Clinical Trials Experience</title>
 <text>
 <paragraph id="ID41">The clinical efficacy and safety of coadministered dutasteride and tamsulosin, which are individual components of dutasteride and tamsulosin hydrochloride capsules, have been evaluated in a multicenter, randomized, double-blind, parallel group trial (the Combination with Alpha-Blocker Therapy, or CombAT, trial) </paragraph>
 <list id="ID42" listtype="unordered" stylecode="Disc">
 <item>The most common adverse reactions reported in subjects receiving coadministered dutasteride and tamsulosin were impotence, decreased libido, breast disorders (including breast enlargement and tenderness), ejaculation disorders, and dizziness.</item>

【问题讨论】：

标签： python xml nlp

【解决方案1】：

您可以使用正则表达式对其进行硬编码，也可以使用 lxml 之类的库来解析您的 xml 文件

使用正则表达式：

import re

your_text = "(...)"

def search(instr):
    return re.findall(r"<.+>.*{}.*<.+>".format(instr), your_text, re.MULTILINE)

print(search("safety"))

【讨论】：