beautifulsoup 运行报错“UserWarning: No parser was explicitly specified,...."-优快云博客

本文介绍了一个关于使用BeautifulSoup解析HTML文档时遇到的警告信息及其解决办法。该警告提示未明确指定解析器，默认使用'lxml'，建议在不同环境下运行时指定统一的解析器以避免潜在的行为差异。

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[root@localhost beautifulsoup]# python lianxi.py
/usr/lib/python2.7/site-packages/bs4/__init__.py:181: UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("lxml"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.

The code that caused this warning is on line 36 of the file lianxi.py. To get rid of this warning, change code that looks like this:

BeautifulSoup(YOUR_MARKUP})

to this:

BeautifulSoup(YOUR_MARKUP, "lxml")

markup_type=markup_type))

=============================================
源代码：

def handle_html():
# with open('index.txt', 'r') as e:
# html_doc = ''.join(e.readlines())

soup = BeautifulSoup(html_doc)
# print soup.prettify()
print soup.title.name
print soup.find_all('a')

解决办法：
修改为soup = BeautifulSoup(html_doc,'html_parser')

def handle_html():
# with open('index.txt', 'r') as e:
# html_doc = ''.join(e.readlines())

soup = BeautifulSoup(html_doc,'html_parser')
# print soup.prettify()
print soup.title.name
print soup.find_all('a')

来自 “ ITPUB博客 ” ，链接：http://blog.itpub.net/31385999/viewspace-2143414/，如需转载，请注明出处，否则将追究法律责任。

转载于:http://blog.itpub.net/31385999/viewspace-2143414/