Django CMS "找不到模块 html5lib

Question

我在一个基本的Django CMS网站上安装了所有默认和推荐的模块，但我收到了一个错误信息，内容是……

更新

Request Method: GET
Request URL:    http://teamdjango.lnukapps.co.uk/admin/cms/page/21/
Django Version: 1.3.1
Exception Type: ImportError
Exception Value:    
No module named html5lib
Exception Location: /usr/lib/python2.6/site-packages/django_cms-2.2-py2.6.egg/cms/utils/html.py in <module>, line 2
Python Executable:  /usr/bin/python
Python Version: 2.6.6
Python Path:    
['/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg',
 '/usr/lib/python2.6/site-packages/html5lib-0.90-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_classy_tags-0.3.4.1-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_mptt-0.4.2-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_sekizai-0.4.2-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_cms-2.2-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_filer-0.9a1-py2.6.egg',
 '/usr/lib/python2.6/site-packages/django_polymorphic-0.2-py2.6.egg',
 '/usr/lib/python2.6/site-packages/easy_thumbnails-1.0_alpha_18-py2.6.egg',
 '/usr/lib/python2.6/site-packages/cmsplugin_filer-0.8.0-py2.6.egg',
 '/usr/lib64/python26.zip',
 '/usr/lib64/python2.6',
 '/usr/lib64/python2.6/plat-linux2',
 '/usr/lib64/python2.6/lib-tk',
 '/usr/lib64/python2.6/lib-old',
 '/usr/lib64/python2.6/lib-dynload',
 '/usr/lib64/python2.6/site-packages',
 '/usr/lib64/python2.6/site-packages/PIL',
 '/usr/lib/python2.6/site-packages',
 '/usr/lib/python2.6/site-packages']

 Server time:   Fri, 14 Oct 2011 14:05:59 +0100

我通过 easy_install html5lib 安装了html5lib，并且如果我在默认的Python命令行中 import html5lib，它可以正常导入。

Python 2.6.6 (r266:84292, May 20 2011, 16:42:11)
[GCC 4.4.5 20110214 (Red Hat 4.4.5-6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import html5lib
>>>

这个环境是在全新安装的Scientific Linux上，使用的是Python 2.6.6。

我正在使用Django 1.3.1。

我的INSTALLED_APPS设置如下。

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    # Uncomment the next line to enable the admin:
    'django.contrib.admin',
    # Uncomment the next line to enable admin documentation:
    'django.contrib.admindocs',
    'cms',
    'mptt',
    'menus',
    'south',
    'sekizai',
    'cms.plugins.flash',
    'cms.plugins.googlemap',
    'cms.plugins.link',
    'cms.plugins.snippet',
    'cms.plugins.text',
    'cms.plugins.twitter',
    'filer',
    'cmsplugin_filer_file',
    'cmsplugin_filer_folder',
    'cmsplugin_filer_image',
    'cmsplugin_filer_teaser',
    'cmsplugin_filer_video',
    # 'reversion',
)

我的问题（如果现在还不明显的话；）是为什么导入html5lib会出现问题，以及我该如何解决它。

更新 1

@matt-williamson

谢谢，这里是html5lib的文件信息。

>>> html5lib.__file__
'/usr/lib/python2.6/site-packages/html5lib-0.90-py2.6.egg/html5lib/__init__.pyc'

我已经更新了Django的错误信息，以显示更多的错误页面。如你所见，Python的路径中包含 /usr/lib/python2.6/site-packages/html5lib-0.90-py2.6.egg，这让我觉得它应该能够找到这个库。

django web development python environment module import error html5lib django-cms installed apps Scientific Linux

Django CMS "找不到模块 html5lib

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