更新
By adding BeautifulSoup.py to my app source, this error was gone :)
谢谢@Ned Deily，这花了很长时间，但收获颇丰。
忽略此处
我只有一个用BeautifulSoup安装的python 2.5实例，仍然没有运气！，我做错了什么，请帮忙
bash-3.2$ ls -ltr /Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages
total 1096
-rw-r--r-- 1 Harit admin 66866 May 28 2006 BeautifulSoup.py
-rw-r--r-- 1 Harit admin 26413 May 28 2006 BeautifulSoupTests.py
-rw-rwxr-- 1 root admin 119 Sep 18 2006 README
drwxr-xr-x 19 Harit admin 646 Aug 20 23:58 django
-rw-r--r-- 1 Harit admin 1228 Aug 20 23:58 Django-1.3-py2.5.egg-info
-rw-r--r-- 1 Harit admin 333390 Aug 21 00:17 setuptools-0.6c11-py2.5.egg
-rw-r--r-- 1 Harit admin 30 Aug 21 00:17 setuptools.pth
-rw-r--r-- 1 Harit admin 215 Aug 21 00:22 easy-install.pth
-rw-r--r-- 1 Harit admin 33196 Aug 21 00:23 BeautifulSoupTests.pyc
-rw-r--r-- 1 Harit admin 67193 Aug 21 00:23 BeautifulSoup.pyc
-rw-r--r-- 1 Harit admin 970 Aug 21 00:23 BeautifulSoup-3.0.0-py2.5.egg-info
bash-3.2$
从此处忽略
我从macport和system中删除了所有版本的python，并重新安装了python 2.7版本
bash-3.2$ python
Python 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import django
>>> from BeautifulSoup import BeautifulSoup
>>>
并且所有路径也都很好
bash-3.2$ echo $PATH
/Library/Frameworks/Python.framework/Versions/2.7/bin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/X11/bin:/opt/local/bin
只有一个安装了Django和BeautifulSoup的python版本
bash-3.2$ cd /Library/Frameworks/Python.framework/Versions/Current/
Headers/ Mac/ Python Resources/ bin/ include/ lib/ share/
bash-3.2$ cd /Library/Frameworks/Python.framework/Versions/Current/lib/python2.7/lib
lib-dynload/ lib-tk/ lib2to3/
bash-3.2$ cd /Library/Frameworks/Python.framework/Versions/Current/lib/python2.7/
Display all 641 possibilities? (y or n)
bash-3.2$ ls /Library/Frameworks/Python.framework/Versions/Current/lib/python2.7/site-packages/
BeautifulSoup-3.2.0-py2.7.egg-info BeautifulSoupTests.pyc easy-install.pth
BeautifulSoup.py Django-1.3-py2.7.egg-info setuptools-0.6c11-py2.7.egg
BeautifulSoup.pyc README setuptools.pth
BeautifulSoupTests.py django
bash-3.2$
但是当我运行dev_appserver.py project时，它仍然无法导入模块BeautifulSoup
请帮忙
谢谢
从下方忽略
我在我的Mac上安装了BeautifulSoup，我可以执行以下操作：
bash-3.2$ python
Python 2.6.7 (r267:88850, Jul 27 2011, 11:54:59)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from BeautifulSoup import BeautifulSoup
>>>
但是当我运行我的djando应用程序并尝试运行代码时，它无法说
Error was: No module named BeautifulSoup
我似乎正在正确使用一切
bash-3.2$ which python
/opt/local/bin/python
lrwxr-xr-x 1 root admin 9 Aug 16 13:55 python -> python2.6
bash-3.2$ cd /Library/Python/2.6/site-packages/
BeautifulSoup-3.0.0-py2.6.egg-info ipython-0.11-py2.6.egg/
BeautifulSoup.py mercurial/
BeautifulSoup.pyc mercurial-1.8.3_20110502-py2.6.egg-info/
BeautifulSoupTests.py nose-1.1.2-py2.6.egg/
BeautifulSoupTests.pyc paramiko-1.7.6-py2.6.egg
Django-1.3-py2.6.egg-info pip-1.0.2-py2.6.egg/
MySQL_python-1.2.3-py2.6-macosx-10.6-universal.egg pycrypto-2.3-py2.6-macosx-10.6-universal.egg
README pysqlite-2.6.3-py2.6.egg-info
django/ pysqlite2/
easy-install.pth setuptools-0.6c11-py2.6.egg
easy_install setuptools.pth
easy_install-2.6 xlrd/
hgext/ xlrd-0.6.1-py2.6.egg-info
如何解决此问题
感谢
答案 0 :(得分：4)
你显然已经安装了第二个更新的Python 2.6实例。有可能您的Django应用程序已安装并从另一个Python 2.6实例运行，可能是系统Python 2.6（/usr/bin/python或/usr/bin/python2.6）。键入which python以查看具有BeautifulSoup的Python的路径（也许是/usr/local/bin/python？）。你需要巩固一些事情;要么使用Django在Python中安装BeautifulSoup，要么在带有BeautifulSoup的Python中安装Django。
更新：由于您显然正在运行Google App Engine dev_server，因此很可能它在Python 2.5下运行，而不是在Python 2.6下运行;目前，据我所知，GAE正式支持2.5。注意Apple随OS X 10.6发布了Python 2.6和2.5。所以你可能需要在Python 2.5中安装Beautiful Soup。尝试：
easy_install-2.5 -U -v beautifulsoup==3.2
目前，您需要指定版本，因为目前有更新的Beautiful Soup 4测试版似乎与Python 2.5不兼容。
更新：您似乎还安装了多个版本的Python 2.5。您展示的路径是第三方Python，而不是Apple提供的Python 2.5。 所以我最后的建议是尝试将easy_install-2.5用于Apple提供的Python 2.5：
/usr/bin/easy_install-2.5 -U -v beautifulsoup==3.2