django 新手……一个月以来，我一直在尝试遵循本教程，但没有成功。当我同步数据库时，我收到以下错误：
(virt-inplaceedit)Mac:testing manuelstrasser$ python manage.py syncdb
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
utility.execute()
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/django/core/management/__init__.py", line 354, in execute
django.setup()
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/django/__init__.py", line 21, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/django/apps/registry.py", line 85, in populate
app_config = AppConfig.create(entry)
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/django/apps/config.py", line 123, in create
import_module(entry)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/sorl/thumbnail/__init__.py", line 1, in <module>
from sorl.thumbnail.fields import ImageField
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/sorl/thumbnail/fields.py", line 6, in <module>
from sorl.thumbnail import default
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/sorl/thumbnail/default.py", line 3, in <module>
from sorl.thumbnail.helpers import get_module_class
File "/Users/manuelstrasser/Desktop/inplace/virt-inplaceedit/lib/python2.7/site-packages/sorl/thumbnail/helpers.py", line 5, in <module>
from django.utils import simplejson
ImportError: cannot import name simplejson
我安装了 simplejson 但仍然是同样的错误。有人对本教程有经验吗？我完全按照描述做了一切......