设置MongoDB + Django

Question

我是Mongo DB和Django的新手。 我一直在尝试使用Mongo DB作为Django的主要数据库。 我按照以下链接安装了MongoDB和Django-nonrel：

Django - MongoDB设置

django-nonrel的版本，我使用的是1.7。 克隆链接到它：

pip install git+https://github.com/django-nonrel/django@nonrel-1.7

完成所有步骤后，django项目文件中的settings.py看起来像这样：

DATABASES = {
    'default': {
        'ENGINE': 'django_mongodb_engine',
        'NAME': 'blink',
        'USER': '',
        'PASSWORD': '',
        'HOST': '127.0.0.1',
        'PORT': 1234,
    }
}

INSTALLED_APPS = (
    'djangotoolbox',
)

但是在使用以下命令运行manage.py时：

python manage.py runserver

我收到这样的错误，

System check identified no issues (0 silenced).
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x104a95f80>
    Traceback (most recent call last):
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django/utils/autoreload.py", line 222, in wrapper
        fn(*args, **kwargs)
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django/core/management/commands/runserver.py", line 107, in inner_run
        self.check_migrations()
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django/core/management/commands/runserver.py", line 159, in check_migrations
        executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django/db/utils.py", line 242, in __getitem__
        backend = load_backend(db['ENGINE'])
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django/db/utils.py", line 108, in load_backend
        return import_module('%s.base' % backend_name)
      File "/Users/sunilkumar/blink/lib/python3.3/importlib/__init__.py", line 90, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 1584, in _gcd_import
      File "<frozen importlib._bootstrap>", line 1565, in _find_and_load
      File "<frozen importlib._bootstrap>", line 1532, in _find_and_load_unlocked
      File "<frozen importlib._bootstrap>", line 584, in _check_name_wrapper
      File "<frozen importlib._bootstrap>", line 1022, in load_module
      File "<frozen importlib._bootstrap>", line 1003, in load_module
      File "<frozen importlib._bootstrap>", line 560, in module_for_loader_wrapper
      File "<frozen importlib._bootstrap>", line 853, in _load_module
      File "<frozen importlib._bootstrap>", line 980, in get_code
      File "<frozen importlib._bootstrap>", line 313, in _call_with_frames_removed
      File "/Users/sunilkumar/blink/lib/python3.3/site-packages/django_mongodb_engine/base.py", line 265
        raise ImproperlyConfigured, exc_info[1], exc_info[2]
                                  ^
    SyntaxError: invalid syntax

我无法理解错误是什么。 有人可以帮忙。

Answer 1

看起来你正在使用Python 3.但是django-mongodb-engine django-nonrel依赖的django-mongodb-engine甚至还不支持Python 3。

上面的语法错误实际上在py3中有效，但在py2中没有。 因此错误。

也许你应该考虑在这个项目中使用py2。