我在教程“ http://django-mptt.github.com/django-mptt/tutorial.html ”中做了步骤
但它仍然给我导入错误,我仔细检查了 mptt 的代码,发现 mptt>model 文件中存在 MPTTMODEL 类
Validating models...
Unhandled exception in thread started by <bound method Command.inner_run of <django.contrib.staticfiles.management.commands.runserver.Command object at 0x1ec4710>>
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/core/management/commands/runserver.py", line 91, in inner_run
self.validate(display_num_errors=True)
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/core/management/base.py", line 266, in validate
num_errors = get_validation_errors(s, app)
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/core/management/validation.py", line 30, in get_validation_errors
for (app_name, error) in get_app_errors().items():
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/db/models/loading.py", line 158, in get_app_errors
self._populate()
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/db/models/loading.py", line 67, in _populate
self.load_app(app_name)
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/db/models/loading.py", line 88, in load_app
models = import_module('.models', app_name)
File "/usr/local/lib/python2.7/dist-packages/Django-1.4-py2.7.egg/django/utils/importlib.py", line 35, in import_module
__import__(name)
File "/home/kareemhashem/espace/sharek/core/models.py", line 12, in <module>
from mptt.models import MPTTModel, TreeForeignKey
ImportError: cannot import name MPTTModel