只显示查到一行 ，然后就失败，去掉try后显示如下错误！

Question

pydev debugger: starting (pid: 7212)craw 1,http://baike.baidu.com/item/PythonTraceback (most recent call last):  File "D:\eclipse-standard_downza\eclipse\plugins\org.python.pydev_3.9.0.201411111611\pysrc\pydevd.py", line 2183, in <module>    globals = debugger.run(setup['file'], None, None)  File "D:\eclipse-standard_downza\eclipse\plugins\org.python.pydev_3.9.0.201411111611\pysrc\pydevd.py", line 1622, in run    pydev_imports.execfile(file, globals, locals)  # execute the script  File "D:\workspase\imooc\baike_spider\spider_main.py", line 41, in <module>    obj_spider.craw(root_url)  File "D:\workspase\imooc\baike_spider\spider_main.py", line 25, in craw    new_urls,new_data=self.parser.parse(new_url,html_cont)  File "D:\workspase\imooc\baike_spider\html_parser.py", line 35, in parse    soup = BeautifulSoup(html_cont,'html_parser',from_encoding='utf-8')  File "C:\Python27\lib\site-packages\bs4\__init__.py", line 165, in __init__    % ",".join(features))bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: html_parser. Do you need to install a parser library?

Answer 1

soup = BeautifulSoup(html_cont,'html_parser',from_encoding='utf-8')

这句你改成：

soup = BeautifulSoup(html_cont,'html.parser',from_encoding='utf-8')