ModuleNotFoundError: No module named 'MySQLdb'

执行命令 python manage.py makemigrations时抛出以下错误

Traceback (most recent call last):

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\backends\mysql\base.py", line 15, in <module>

    import MySQLdb as Database

ModuleNotFoundError: No module named 'MySQLdb'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  File "manage.py", line 21, in <module>

    main()

  File "manage.py", line 17, in main

    execute_from_command_line(sys.argv)

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\core\management\__init__.py", line 371, in execute_from_command_line

    utility.execute()

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\core\management\__init__.py", line 347, in execute

    django.setup()

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\__init__.py", line 24, in setup

    apps.populate(settings.INSTALLED_APPS)

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\apps\registry.py", line 112, in populate

    app_config.import_models()

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\apps\config.py", line 198, in import_models

    self.models_module = import_module(models_module_name)

  File "D:\Program Files\Python\Python37-32\lib\importlib\__init__.py", line 127, in import_module

    return _bootstrap._gcd_import(name[level:], package, level)

  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import

  File "<frozen importlib._bootstrap>", line 983, in _find_and_load

  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked

  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked

  File "<frozen importlib._bootstrap_external>", line 728, in exec_module

  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>

    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>

    class AbstractBaseUser(models.Model):

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\models\base.py", line 114, in __new__

    new_class.add_to_class('_meta', Options(meta, app_label))

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\models\base.py", line 315, in add_to_class

    value.contribute_to_class(cls, name)

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\models\options.py", line 205, in contribute_to_class

    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\__init__.py", line 33, in __getattr__

    return getattr(connections[DEFAULT_DB_ALIAS], item)

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\utils.py", line 202, in __getitem__

    backend = load_backend(db['ENGINE'])

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\utils.py", line 110, in load_backend

    return import_module('%s.base' % backend_name)

  File "D:\Program Files\Python\Python37-32\lib\importlib\__init__.py", line 127, in import_module

    return _bootstrap._gcd_import(name[level:], package, level)

  File "D:\Program Files\Python\Python37-32\lib\site-packages\django\db\backends\mysql\base.py", line 20, in <module>

    ) from err

django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module.

Did you install mysqlclient?

问题原因：MySQLdb只支持Python2.*，还不支持3.* ，但是在settings中配置的数据库为MySql，所以执行时会报错

DATABASES = {

    'default': {

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

        'NAME': 'autotest',

        'USER': 'root',

        'PASSWORD': 'root',

        'HOST': '127.0.0.1',

        'PORT': '3306'

    }

}

解决方法1：若想继续使用MySql数据库，则可用PyMySQL代替，安装命令为 pip install PyMySQL

在settings.py同级目录中的_init_.py文件中加入代码(只需更改此次，所创建的应用不需再设置，如果只在应用下的_init_.py文件中更改，则只适用该应用)

import pymysql

pymysql.install_as_MySQLdb()

再次执行：

D:\autotestplat>python manage.py makemigrations

Migrations for 'product':

  product\migrations\0001_initial.py

    - Create model Product

Migrations for 'apitest':

  apitest\migrations\0001_initial.py

    - Create model Apis

    - Create model Apistep

    - Create model Apitest

    - Add field Apitest to apistep

Migrations for 'bug':

  bug\migrations\0001_initial.py

    - Create model Bug

解决方法2：安装mysqlclient,可用命令pip install mysqlclient