加载MySQLdb模块时出错:没有名为'MySQLdb'的模块

Question

我已经尝试了很多来解决这个问题,但我没有解决它.我在谷歌和stackoverflow上搜索了很多,没有选项对我有用.请帮我.提前致谢.我使用的是django 1.10,python 3.4.我试过了 :

1. pip install mysqldb.
2. pip install mysql.
3. pip install mysql-python.
4. pip安装MySQL-python.
5. easy_install mysql-python.
6. easy_install MySQL-python.

还有别的吗？

      C:\Users\benq\Desktop\dimo-develop\Project>python manage.py runserver
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x0332D348>
Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\django\db\backends\mysql\base.py", line 25, in <module>
    import MySQLdb as Database
ImportError: No module named 'MySQLdb'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\django\utils\autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "C:\Python34\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "C:\Python34\lib\site-packages\django\utils\autoreload.py", line 249, in raise_last_exception
    six.reraise(*_exception)
  File "C:\Python34\lib\site-packages\django\utils\six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "C:\Python34\lib\site-packages\django\utils\autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "C:\Python34\lib\site-packages\django\__init__.py", line 18, 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(all_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 49, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Python34\lib\site-packages\django\db\models\base.py", line 108, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Python34\lib\site-packages\django\db\models\base.py", line 299, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Python34\lib\site-packages\django\db\models\options.py", line 263, 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 36, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Python34\lib\site-packages\django\db\utils.py", line 212, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Python34\lib\site-packages\django\db\utils.py", line 116, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Python34\lib\importlib\__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Python34\lib\site-packages\django\db\backends\mysql\base.py", line 28, in <module>
    raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named 'MySQLdb'

Answer 1

MySQLdb是MySQL数据库的接口.正如其他帖子所提到的,MySQLdb不支持Python 3.x. 我使用PyMySQL作为替代品.您需要先安装它:

pip install PyMySQL

下一步是在所有代码中用'pymysql'替换'MySQLdb',这是令人生畏的.幸运的是,PyMySQL可以作为MySQLdb动态加载.为了在Django中实现它,你需要在项目的默认应用程序的目录下的__init__.py文件中添加以下行(如果你有一个名为'myproject'的项目,添加到myproject/myproject/init.py的行) :

import pymysql
pymysql.install_as_MySQLdb()

运行Django项目时将执行__init__.py,并且将替换MySQLdb.然后你的问题就解决了.

Answer 2

MySQLdb仅适用于Python 2.x. 您无法安装Python 3.x版本.现在从你的问题我可以看到你正在使用Django.在这种情况下,您有三种选择,来自Django mysql注释:

• MySQLdb的
• 的mysql
• MySQL的连接重蟒蛇

这给你两个选择,mysqlclient和mysql-connect-python,第一个需要从插件的扩展编译,在Windows中,这意味着VStudio库和编译本机扩展的专有技术.

mysql-connect-python没有编译(我不建议将其用于生产,也许只适用于dev),因此您需要安装它.

你可以试试:

pip3 install mysql-connect-python

要么

pip3 install http://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.0.4.zip

如果第一个失败.

Answer 3

您可以使用mysqlclient而不是MySQLdb.MySqLdb与Python 3不兼容.

pip install mysqlclient