Django填充器不工作。ImportError:无法导入名称混合

Question

我在我的manage.py上调用migrate，但它不工作。

我正在运行Ubuntu 18.04

下面是错误：“

Traceback (most recent call last):
  File "/snap/pycharm-professional/68/helpers/pycharm/django_manage.py", line 52, in <module>
    run_command()
  File "/snap/pycharm-professional/68/helpers/pycharm/django_manage.py", line 46, in run_command
    run_module(manage_file, None, '__main__', True)
  File "/usr/lib/python2.7/runpy.py", line 188, in run_module
    fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 82, in _run_module_code
    mod_name, mod_fname, mod_loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/home/jre/PycharmProjects/autda_emp/manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute
    django.setup()
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/django/__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate
    app_config.import_models()
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/filer/models/__init__.py", line 3, in <module>
    from .clipboardmodels import *  # flake8: noqa
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/filer/models/clipboardmodels.py", line 9, in <module>
    from . import filemodels
  File "/home/jre/PycharmProjects/autda_emp/venv/local/lib/python2.7/site-packages/filer/models/filemodels.py", line 16, in <module>
    from . import mixins
ImportError: cannot import name mixins

这是我的pip冻结：

Django==1.11.13
django-filer==1.3.1
django-js-asset==1.1.0
django-mixins==0.0.10
django-mptt==0.8.7
django-polymorphic==1.3.1
django-suit==0.3a3
easy-thumbnails==2.5
Pillow==5.1.0
psycopg2==2.6.1
pytz==2018.4
Unidecode==0.4.21

除了按照文档中的说明创建项目和安装包之外，我并没有做太多的工作。

如果需要，这里是我的installed apps列表

INSTALLED_APPS = [

    'autokada_emp.apps.MyDjangoSuitConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'mixins',
    'easy_thumbnails',
    'filer',
    'mptt',

]

我没有太多的经验，所以所有的帮助都将不胜感激。

以下是问到的项目结构：

├── autda_emp
│   ├── apps.py
│   ├── apps.pyc
│   ├── __init__.py
│   ├── __init__.pyc
│   ├── settings.py
│   ├── settings.pyc
│   ├── templatetags
│   │   └── future.py
│   ├── urls.py
│   ├── urls.pyc
│   ├── wsgi.py
│   └── wsgi.pyc
├── manage.py
├── templates
└── venv
    ├── bin [18 entries exceeds filelimit, not opening dir]
    ├── include
    │   └── python2.7 -> /usr/include/python2.7
    ├── lib
    │   └── python2.7 [48 entries exceeds filelimit, not opening dir]
    ├── local
    │   ├── bin -> /home/jre/PycharmProjects/autda_emp/venv/bin
    │   ├── include -> /home/jre/PycharmProjects/autada_emp/venv/include
    │   └── lib -> /home/jre/PycharmProjects/autda_emp/venv/lib
    └── pip-selfcheck.json

经过广泛的测试，我发现错误在我安装django-suit之后就开始了

Answer 1

我猜这个问题是由你有django-polymorphic==1.3.1引起的。

@trinchet在评论中链接到的问题有这样的答案：https://stackoverflow.com/a/24139080/1600612，它说django-polymorphic可以导致你的问题。

filer的docs提到了这一点：

用于Django >=1.11的

使用django多态>=2.0

然而，根据您的pip freeze输出，您有Django==1.11.13和django-polymorphic==1.3.1。

Answer 2

我也面临着同样的问题。

用下面给出的命令安装polymorphic，你就不会再遇到这个错误了。

pip3 django-polymorphic ==2.0