Parsing XML in Python with regex

 

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  • RegEx match open tags except XHTML self-contained tags 35 answers

    • You normally don't want to use re.match . Quoting from the docs:

    If you want to locate a match anywhere in string, use search() instead (see also search() vs. match()).

    Note: 

    >>> print re.match('>.*<', line)
None
>>> print re.search('>.*<', line)
<_sre.SRE_Match object at 0x10f666238>
>>> print re.search('>.*<', line).group(0)
>PLAINSBORO, NJ 08536-1906<

    Also, why parse XML with regex when you can use something like BeautifulSoup :). 

    >>> from bs4 import BeautifulSoup as BS
>>> line='<City_State>PLAINSBORO, NJ 08536-1906</City_State>'
>>> soup = BS(line)
>>> print soup.find('city_state').text
PLAINSBORO, NJ 08536-1906

    请使用像ElementTree这样的XML解析器

    >>> from xml.etree import ElementTree as ET
>>> line='<City_State>PLAINSBORO, NJ 08536-1906</City_State>'
>>> ET.fromstring(line).text
'PLAINSBORO, NJ 08536-1906'

    re.match returns a match only if the pattern matches the entire string. To find substrings matching the pattern, use re.search.

    And yes, this is a simple way to parse XML, but I would highly encourage you to use a library specifically designed for the task.

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