Django 第一次数据迁移报错

python版本3.8 怀疑是python版本不兼容，参照网上的教程，未生效！准备安装python3.7再试下

https://blog.****.net/weixin_41134293/article/details/81509141

F:\python-dev\django_modle>pip list
Package           Version
----------------- -------
astroid           2.3.3
colorama          0.4.1
Django            2.2.7
isort             4.3.21
lazy-object-proxy 1.4.3
mccabe            0.6.1
mysqlclient       1.4.5
pip               19.3.1
pylint            2.4.3
PyMySQL           0.9.3
pytz              2019.3
setuptools        41.2.0
six               1.13.0
sqlparse          0.3.0
wrapt             1.11.2

F:\python-dev\django_modle>python manage.py makemigrations
Traceback (most recent call last):
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\backends\mysql\base.py", line 15, in <module>
    import MySQLdb as Database
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\MySQLdb\__init__.py", line 21, in <module>
    raise ImportError("this is MySQLdb version %s, but _mysql is version %r" %
ImportError: this is MySQLdb version (1, 4, 5, 'final', 0), but _mysql is version (1, 4, 4, 'final', 0)

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 "E:\Program Files (x86)\Python3.8\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\core\management\__init__.py", line 357, in execute
    django.setup()
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\apps\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "E:\Program Files (x86)\Python3.8\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\models\base.py", line 117, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\models\base.py", line 321, in add_to_class
    value.contribute_to_class(cls, name)
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\models\options.py", line 204, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\__init__.py", line 28, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\utils.py", line 201, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\utils.py", line 110, in load_backend
    return import_module('%s.base' % backend_name)
  File "E:\Program Files (x86)\Python3.8\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "E:\Program Files (x86)\Python3.8\lib\site-packages\django\db\backends\mysql\base.py", line 17, in <module>
    raise ImproperlyConfigured(
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module.
Did you install mysqlclient?
 

#########################################################################

手动改了mysqldb的版本号为1.4.4，居然成功了！？ 什么鬼