如何解析具有多行的不规则 XML 文件

Question

I have an XML file named as file.txt as shown below:

<message><header><msg-date></msg-date><msg-time></msg-time><sys-id></sys-id></header><record><remittance-details></remittance-details><source-sys-id></source-sys-id></message>
<message><header><msg-date></msg-date><msg-time></msg-time><sys-id></sys-id></header><record><remittance-details></remittance-details><source-sys-id></source-sys-id></message>
<message><header><msg-date></msg-date><msg-time></msg-time><sys-id></sys-id></header><record><remittance-details></remittance-details><source-sys-id></source-sys-id></message>
<message><header><msg-date></msg-date><msg-time></msg-time><sys-id></sys-id></header><record><remittance-details></remittance-details><source-sys-id></source-sys-id></message>
<message><header><msg-date></msg-date><msg-time></msg-time><sys-id></sys-id></header><record><remittance-details></remittance-details><source-sys-id></source-sys-id></message>

I need to process the above file after parsing it to a standard format like below in the file:

<message>
  <header>
    <msg-date></msg-date>
    <msg-time></msg-time>
    <sys-id></sys-id>
  </header>
  <record>
    <remittance-details></remittance-details>
  </record>
</message>

updated the xml details to avoid confusion. The examples shown above are just for understanding as unable to share the whole details here(pls ignore if there any tag missing).

I have written the below code to parse it:

import xml.etree.ElementTree as ET
import lxml.etree as etree
import os
import sys
File_path = os.path.abspath(__file__)
BASE_DIR = os.path.dirname(File_path)
file = os.path.join(BASE_DIR,'file.txt')
parser = etree.XMLParser(recover=True)
dom = etree.parse(file,parser=parser )
xmlstr = etree.tostring(dom, pretty_print=True)
with open (file, "wb") as f:
    f.write(xmlstr) 

However, its parsing the first line of the file and not parsing the complete file, so the processing is getting failed. Therefore, would like to understand how to parse the complete xml lines in the file to process it.

Answer 1

You have few issues:

1. There is no root in your doc. This can be solved by wrapping the xml text with <root>..</root>
2. The tag remittance-details is not closed so its is INVALID XML.