嘗試導入python模塊時的瘋狂行爲

Question

我想用Apache mod-wsgi部署一個django web應用程序，但我已將它們追溯到此行（django-tagging模塊缺失）：

 
[Wed Feb 20 13:08:42 2013] [error] [client 172.19.130.50] ImportError: No module named tagging 

現在，這裏是我的輸出，當我嘗試運行PIP-蟒蛇（我使用CentOS 6的）爲根，作爲Apache用戶：安裝

 
[root@app1 site-packages]# pip-python freeze | grep tag 
django-tagging==0.3.1 
django-taggit==0.9.3 

標記......

 
[root@app1 site-packages]# sudo -u apache pip-python freeze | grep tag 
django-tagging==0.3.1 
django-taggit==0.9.3 

Apache用戶說的一樣！

 
[root@app1 /]# python 
Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23) 
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import tagging 
>>> 

好的根可以導入標記！

 
[root@app1 /]# sudo -u apache python 
Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23) 
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import tagging 
Traceback (most recent call last): 
    File "", line 1, in 
ImportError: No module named tagging 
>>> 

但是，apache用戶不能!!!!!我怎樣才能做這項工作？

我已經對dusang-tagging的所有/usr/lib/python2.6/site-packages/權限進行了雙重和三重檢查，它們和我的其他軟件包一樣。

更新1： 我真的不記得我是怎麼安裝Django的標籤模塊 - 但可能是因爲因爲Apache無法安裝全球根模塊！

更新2： 這裏的馬亭，PIETERS的建議輸出：

 
[root@app1 /]# sudo -u apache python -c 'import sys; print sys.path' 
['', '/usr/lib64/python2.6/site-packages/Twisted-12.1.0-py2.6-linux-x86_64.egg', '/usr/lib/python2.6/site-packages/django_cas-2.1.1-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/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info'] 
[root@app1 /]# python -c 'import sys; print sys.path' 
['', '/usr/lib64/python2.6/site-packages/Twisted-12.1.0-py2.6-linux-x86_64.egg', '/usr/lib/python2.6/site-packages/django_cas-2.1.1-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/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info'] 
[root@app1 /]# sudo -u apache head `which pip-python` 
#!/usr/bin/python 
# EASY-INSTALL-ENTRY-SCRIPT: 'pip==0.8','console_scripts','pip' 
__requires__ = 'pip==0.8' 
import sys 
from pkg_resources import load_entry_point 

if __name__ == '__main__': 
    sys.exit(
     load_entry_point('pip==0.8', 'console_scripts', 'pip')() 
    ) 
[root@app1 /]# head `which pip-python` 
#!/usr/bin/python 
# EASY-INSTALL-ENTRY-SCRIPT: 'pip==0.8','console_scripts','pip' 
__requires__ = 'pip==0.8' 
import sys 
from pkg_resources import load_entry_point 

if __name__ == '__main__': 
    sys.exit(
     load_entry_point('pip==0.8', 'console_scripts', 'pip')() 
    ) 

的是完全一樣的:(

更新3： 是，Apache用戶可以加載其他模塊：

 
[root@app1 /]# sudo -u apache python 
Python 2.6.6 (r266:84292, Sep 11 2012, 08:34:23) 
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import django 
>>> import twisted 
>>> import cairo 

更新4：我討厭自己。問題在於 /usr/lib/python2.6/site-packages/tagging/目錄的訪問權限！他們是drw-r - r--（644）而不是正確的drwxr-xr-x（755），所以apache用戶無法進入目錄:(

現在一切正常，謝謝所有幫助

Answer 1

我曾經歷過類似這樣的行爲的東西，並最終增加的Django wsgi.py模塊文件的確切路徑導入：！

import sys 
PACKAGES ='/usr/local/lib/python2.6/dist-packages/' 
sys.path.append(PACKAGES + 'django_compressor-1.1.1-py2.6.egg') 

希望它可以幫助

是誰責怪？不知道，也許apache或mod_wsgi。這發生在我在apache2從Ubuntu 10.04。來自Debian穩定版和測試版的apache2中的最近設置不再需要sys.path.append。