django manage.py migrate 引发 AttributeError答案

【问题标题】：django manage.py migrate raises AttributeErrordjango manage.py migrate 引发 AttributeError
【发布时间】：2014-04-11 05:15:11
【问题描述】：

当我尝试迁移我的数据库时，我收到了这个错误：

Running migrations for easy_thumbnails:
- Nothing to migrate.
 - Loading initial data for easy_thumbnails.
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/Library/Python/2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Library/Python/2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/Library/Python/2.7/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/Library/Python/2.7/site-packages/south/management/commands/migrate.py", line 111, in handle
    ignore_ghosts = ignore_ghosts,
  File "/Library/Python/2.7/site-packages/south/migration/__init__.py", line 233, in migrate_app
    migrator.load_initial_data(target, db=database)
  File "/Library/Python/2.7/site-packages/south/migration/migrators.py", line 222, in load_initial_data
    self.post_1_6(target, db)
  File "/Library/Python/2.7/site-packages/south/migration/migrators.py", line 240, in post_1_6
    old_cache = django.db.models.loading.cache
AttributeError: 'module' object has no attribute 'loading'

应用版本是：

Django  1.6.2
Easy thumbnails 1.4
Mptt    0.5.5
Pymorphy    0.5.6
Python  2.7.5
Pytils  0.3dev
South   0.8.4
Suit    0.2.5

这看起来不像 easy_thumbnails 问题，因为当我尝试迁移我的 django-allauth 时，它会引发同样的错误。请帮帮我！

【问题讨论】：

标签： python django django-south

【解决方案1】：

你的 django 包好像坏了。检查您的环境中是否存在 python2.7/site-packages/django/db/models/loading.py 文件。或者只是重新安装 django 包。

pip install -U --force-reinstall django

【讨论】：