在 Django 1.11 中使用 MySQL Connector/Python 时出错

Question

我已经通过 cmd 中的以下命令创建了 Django 项目：

django-admin.py startproject database

然后我编辑settings.py如下：

DATABASES = {
    'default': {
        'ENGINE':'mysql.connector.django',
        'NAME' : 'music',
        'USER':'python',
        'PASSWORD':'123654789',
        'HOST':'127.0.0.2',
        'OPTIONS':{
            'automatic':True,
        }
    }
 }

当我运行python manage.py shell或python manage.py runserver 我收到错误

type Error None type object is not callable

我正在使用：

Python version 3.4.3,
Os win8,
Django version 1.11,
mysql 5.7,
MySQL Connector/Python.

错误：

Traceback (most recent call last):
  File "C:\Users\Bibek Ghimire\djcode\database\manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 337, in execute
    django.setup()
  File "C:\Python34\lib\site-packages\django\__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Python34\lib\site-packages\django\apps\registry.py", line 108, in populate
    app_config.import_models()
  File "C:\Python34\lib\site-packages\django\apps\config.py", line 202, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Python34\lib\importlib\__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "C:\Python34\lib\site-packages\django\contrib\auth\models.py", line 4, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Python34\lib\site-packages\django\contrib\auth\base_user.py", line 52, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Python34\lib\site-packages\django\db\models\base.py", line 124, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Python34\lib\site-packages\django\db\models\base.py", line 330, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Python34\lib\site-packages\django\db\models\options.py", line 214, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Python34\lib\site-packages\django\db\__init__.py", line 33, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Python34\lib\site-packages\django\db\utils.py", line 212, in __getitem__
    conn = backend.DatabaseWrapper(db, alias)
  File "C:\Python34\lib\site-packages\mysql\connector\django\base.py", line 336, in __init__
    super(DatabaseWrapper, self).__init__(*args, **kwargs)
  File "C:\Python34\lib\site-packages\django\db\backends\base\base.py", line 96, in __init__
    self.client = self.client_class(self)
TypeError: 'NoneType' object is not callable

Answer 1

在您的数据库设置中替换：

'ENGINE':'mysql.connector.django',

与：

'ENGINE':'django.db.backends.mysql'

Answer 2

MySQL Connector/Python 并不总是支持最新版本的 Django。您的回溯看起来类似于 this issue.

我建议您尝试使用 mysqlclient，即 recommended choice for using MySQL with Django。

Answer 3

为了与 Django 1.11 兼容，https://github.com/multiplay/mysql-connector-python 上有 mysql 连接器的补丁版本。

Answer 4

我遇到了同样的问题并且使用的是完全相同的配置。所以。首先我尝试 mysqlclient 但它没有用所以我安装了 mysql-connector==2.1.6 令人惊讶的是它也不能与 Django1.11 一起工作所以我做了一些研究 google 并找到了解决方案。

如果>>> 您是 Facebook 用户登录并访问 https://www.facebook.com/groups/python.django/permalink/1657026527681920/

其他>>>

1) 激活你的虚拟环境。

2) pip3 安装 mysql-connector==2.1.6

3) 访问：https://github.com/mysql/mysql-connector-python/tree/master/lib/mysql/connector/django ...并下载 base.py for django1.11.

4) 现在，转到您的环境 lib/python（版本）/site-packages/mysql/connector/django 并将 base.py 替换为之前下载的 base.py。

在 Django 1.11 中使用 MySQL Connector/Python 时出错

Error using MySQL Connector/Python with Django 1.11

python

mysql

django

mysql-connector