django2.2 python3.* pymysql 运行报错问题

Python3.* + django2.2 + pymysql报如下错误

Watching for file changes with StatReloader
Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\threading.py", line 916,
in _bootstrap_inner
    self.run()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\threading.py", line 864,
in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\util
s\autoreload.py", line 54, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core
\management\commands\runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\util
s\autoreload.py", line 77, in raise_last_exception
    raise _exception[0](_exception[1]).with_traceback(_exception[2])
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\util
s\autoreload.py", line 54, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\__in
it__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\apps
\registry.py", line 114, in populate
    app_config.import_models()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\apps
\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\importlib\__init__.py", l
ine 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\cont
rib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\cont
rib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\m
odels\base.py", line 117, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\m
odels\base.py", line 321, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\m
odels\options.py", line 204, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\_
_init__.py", line 28, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\u
tils.py", line 201, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\u
tils.py", line 110, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\importlib\__init__.py", l
ine 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\b
ackends\mysql\base.py", line 36, in <module>
    raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database._
_version__)
django.core.exceptions.ImproperlyConfigured: mysqlclient 1.3.13 or newer is required; you have 0.9.2.

• 百度：网上说什么要改django库中一个限制连接版本的文件，实际操作了一番，又报了另一个错

正解：

django2.2和pymysql版本不匹配，应该将django版本下调，调成django2.1.7即可
命令如下 pip install django==2.1.7