「導入錯誤：沒有模塊名爲虛擬」新鮮Django項目

我得到了下面的安裝通過MacPorts的在MacOS X 10.5.6：「導入錯誤：沒有模塊名爲虛擬」新鮮Django項目

py25-sqlite3 @2.5.4_0 (active) 
python25 @2.5.4_1+darwin_9+macosx (active) 
sqlite3 @3.6.12_0 (active)

python25正確設置爲我的系統的默認的Python。

我下載的Django 1.1測試版的新副本（我有1.0和軀幹同樣的問題，雖然），並以「sudo python setup.py install」安裝它。

事情似乎通過交互式解釋正確加載：如果我在settings.py改變DATABASE_ENGINE

$ django-admin.py startproject foo 
$ cd foo/ 
$ python manage.py runserver 
Validating models... 
Unhandled exception in thread started by <function inner_run at 0x6c1e70> 
Traceback (most recent call last): 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/commands/runserver.py", line 48, in inner_run 
    self.validate(display_num_errors=True) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/base.py", line 246, in validate 
    num_errors = get_validation_errors(s, app) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/validation.py", line 22, in get_validation_errors 
    from django.db import models, connection 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/db/__init__.py", line 22, in <module> 
    backend = __import__('%s.base' % settings.DATABASE_ENGINE, {}, {}, ['']) 
ImportError: No module named dummy.base

爲「sqlite3」，我得到下面，看似相關的問題：

$ python 
Python 2.5.4 (r254:67916, Apr 10 2009, 16:02:52) 
[GCC 4.0.1 (Apple Inc. build 5490)] on darwin 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import django 
>>> import sqlite3 
>>> ^D

但是：

$ python manage.py runserver 

Validating models... 
Unhandled exception in thread started by <function inner_run at 0x6c1e70> 
Traceback (most recent call last): 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/commands/runserver.py", line 48, in inner_run 
    self.validate(display_num_errors=True) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/base.py", line 246, in validate 
    num_errors = get_validation_errors(s, app) 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/core/management/validation.py", line 22, in get_validation_errors 
    from django.db import models, connection 
    File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages/django/db/__init__.py", line 22, in <module> 
    backend = __import__('%s.base' % settings.DATABASE_ENGINE, {}, {}, ['']) 
ImportError: No module named base 
^C$

我sw耳朵這一切都工作了幾天前，我不記得改變任何有關Django或Python，安裝明智。

我的各種谷歌冒險變得沒有用。那麼......任何想法？

編輯：'syncdb'引發同樣的例外。

來源

2009-04-10 Tyson