Python south migrate仅为我的一个项目生成AttributeError

在开发MacOS时，我有几个django项目。当我运行

python manage.py migrate

时，除了一个之外，所有这些都可以正常工作。但只有一个项目返回此错误：

Running migrations for main:
- Nothing to migrate.
 - Loading initial data for main.
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/site-packages/django/core/management/base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/usr/local/lib/python2.7/site-packages/django/core/management/base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/site-packages/south/management/commands/migrate.py", line 111, in handle
    ignore_ghosts = ignore_ghosts,
  File "/usr/local/lib/python2.7/site-packages/south/migration/__init__.py", line 233, in migrate_app
    migrator.load_initial_data(target, db=database)
  File "/usr/local/lib/python2.7/site-packages/south/migration/migrators.py", line 224, in load_initial_data
    self.post_1_6(target, db)
  File "/usr/local/lib/python2.7/site-packages/south/migration/migrators.py", line 242, in post_1_6
    old_cache = django.db.models.loading.cache
AttributeError: 'module' object has no attribute 'loading'

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我尝试重新安装django并升级了south，但结果相同。

请验证您是否已执行以下操作：

./manage.py schemamigration appname --initial
./manage.py migrate appname --fake

在以后进行更改之后

./manage.py schemamigration appname --auto
./manage.py migrate appname

如果第二块代码不起作用，您可能需要删除

south\u migrationhistory

。首先，删除应用程序文件夹中的

migrations

文件夹。然后（安装了SQL）：

现在做我上面提到的例行公事（--initial，--false）

./manage.py schemamigration appname --auto
./manage.py migrate appname

./manage.py dbshell
SELECT * FROM sqlite_master WHERE type="table";
DROP TABLE south_migrationhistory;
.exit