今天项目需要将HTML转换为纯文本,去网上搜了一下,发现Python果然是神通广大,无所不能,方法是五花八门。。。
拿今天亲自试的两个方法举例,以方便后人:
方法一:
1. 安装nltk,可以去pipy装
(注:需要依赖以下包:numpy, PyYAML)
2.测试代码:
>>> import nltk
>>> aa = r'''
<html>
<body>
<b>Project:</b> DeHTML<br>
<b>Description</b>:<br>
This small script is intended to allow conversion from HTML markup to
plain text.
</body>
</html>
'''
>>> aa
'\n<html>\n <body>\n <b>Project:</b> DeHTML<br>\n <b>Description</b>:<br>\n This small script is intended to allow conversion from HTML markup to \n plain text.\n </body>\n </html>\n '
>>> print nltk.clean_html(aa)
Project: DeHTML
Description :
This small script is intended to allow conversion from HTML markup to
plain text.方法二:
如果觉得nltk太笨重,大材小用的话,可以自己写代码,以下代码转自:http://stackoverflow.com/questions/328356/extracting-text-from-html-file-using-python
from HTMLParser import HTMLParser
from re import sub
from sys import stderr
from traceback import print_exc
class _DeHTMLParser(HTMLParser):
def __init__(self):
HTMLParser.__init__(self)
self.__text = []
def handle_data(self, data):
text = data.strip()
if len(text) > 0:
text = sub('[ \t\r\n]+', ' ', text)
self.__text.append(text + ' ')
def handle_starttag(self, tag, attrs):
if tag == 'p':
self.__text.append('\n\n')
elif tag == 'br':
self.__text.append('\n')
def handle_startendtag(self, tag, attrs):
if tag == 'br':
self.__text.append('\n\n')
def text(self):
return ''.join(self.__text).strip()
def dehtml(text):
try:
parser = _DeHTMLParser()
parser.feed(text)
parser.close()
return parser.text()
except:
print_exc(file=stderr)
return text
def main():
text = r'''
<html>
<body>
<b>Project:</b> DeHTML<br>
<b>Description</b>:<br>
This small script is intended to allow conversion from HTML markup to
plain text.
</body>
</html>
'''
print(dehtml(text))
if __name__ == '__main__':
main()
运行结果:
>>> ================================ RESTART ================================
>>>
Project: DeHTML
Description :
This small script is intended to allow conversion from HTML markup to plain text.真是前人栽树,后人乘凉,不禁想起了一幅画:

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本文介绍了如何使用Python将HTML文件转换为纯文本。提供了两种方法,包括依赖nltk库的方法和自定义代码的方法,旨在帮助开发者高效提取HTML中的文本内容。
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