通过beautifulsoup python从XML文件中提取基于名称标签的信息答案

【问题标题】：Extract info based on name tag from XML file by beautifulsoup python通过beautifulsoup python从XML文件中提取基于名称标签的信息
【发布时间】：2023-03-14 06:51:01
【问题描述】：

在 python 3.5 中——我正在使用 Entrez biopython 从 pubmed 生物医学网站的 Database = pmc 中提取一些信息。现在我想从 XML 文件：

<DocSum>
<Id>5412469</Id>
<Item Name="PubDate" Type="Date">2017 Apr 22</Item>
<Item Name="EPubDate" Type="Date">2017 Apr 22</Item>
<Item Name="Source" Type="String">Int J Mol Sci</Item>
<Item Name="AuthorList" Type="List">
    <Item Name="Author" Type="String">Guo Y</Item>
    <Item Name="Author" Type="String">Bao Y</Item>
    <Item Name="Author" Type="String">Yang W</Item>
</Item>
<Item Name="Title" Type="String">Regulatory miRNAs in Colorectal Carcinogenesis and Metastasis</Item>
<Item Name="Volume" Type="String">18</Item>
<Item Name="Issue" Type="String">4</Item>
<Item Name="Pages" Type="String">890</Item>
<Item Name="ArticleIds" Type="List">
    <Item Name="pmid" Type="String">28441730</Item>
    <Item Name="doi" Type="String">10.3390/ijms18040890</Item>
    <Item Name="pmcid" Type="String">PMC5412469</Item>
</Item>
<Item Name="DOI" Type="String">10.3390/ijms18040890</Item>
<Item Name="FullJournalName" Type="String">International Journal of Molecular Sciences</Item>
<Item Name="SO" Type="String">2017 Apr 22;18(4):890</Item>

extract Name=Title {Exact below line}：

 <Item Name="Title" Type="String">Regulatory miRNAs in Colorectal Carcinogenesis and Metastasis</Item>

但是我该如何解决这个问题呢？虽然我用过这段代码：

    for tag in soup.findAll("docsum"): # I'm working with multiple articles in one file
    for a_tag in tag.findAll("item"):
        a_recs.append(a_tag.text)

return a_recs

但它返回一个列表中的所有值，而我只想要标题。如下：

['2017 Apr 22', '2017 Apr 22', 'Int J Mol Sci', '\nGuo Y\nBao Y\nYang W\n', 'Guo Y', 'Bao Y', 'Yang W', 'Regulatory miRNAs in Colorectal Carcinogenesis and Metastasis', '18', '4', '890', '\n28441730\n10.3390/ijms18040890\nPMC5412469\n', '28441730', '10.3390/ijms18040890', 'PMC5412469', '10.3390/ijms18040890', 'International Journal of Molecular Sciences', '2017 Apr 22;18(4):890']

【问题讨论】：

标签： python xml python-3.x beautifulsoup extract

【解决方案1】：

试试：

>>> data = '''
... <DocSum>
... <Id>5412469</Id>
... <Item Name="PubDate" Type="Date">2017 Apr 22</Item>
... <Item Name="EPubDate" Type="Date">2017 Apr 22</Item>
... <Item Name="Source" Type="String">Int J Mol Sci</Item>
... <Item Name="AuthorList" Type="List">
...     <Item Name="Author" Type="String">Guo Y</Item>
...     <Item Name="Author" Type="String">Bao Y</Item>
...     <Item Name="Author" Type="String">Yang W</Item>
... </Item>
... <Item Name="Title" Type="String">Regulatory miRNAs in Colorectal Carcinogenesis and Metastasis</Item>
... <Item Name="Volume" Type="String">18</Item>
... <Item Name="Issue" Type="String">4</Item>
... <Item Name="Pages" Type="String">890</Item>
... <Item Name="ArticleIds" Type="List">
...     <Item Name="pmid" Type="String">28441730</Item>
...     <Item Name="doi" Type="String">10.3390/ijms18040890</Item>
...     <Item Name="pmcid" Type="String">PMC5412469</Item>
... </Item>
... <Item Name="DOI" Type="String">10.3390/ijms18040890</Item>
... <Item Name="FullJournalName" Type="String">International Journal of Molecular Sciences</Item>
... <Item Name="SO" Type="String">2017 Apr 22;18(4):890</Item>'''
>>> 
>>> from bs4 import BeautifulSoup
>>> soup = BeautifulSoup(data, 'xml')

>>> for tag in soup.findAll("DocSum"):
...    for a_tag in tag.find("Item", {"Name" : "Title"}):
...       a_recs.append(a_tag)
... 
>>> a_recs
['Regulatory miRNAs in Colorectal Carcinogenesis and Metastasis']

【讨论】：