django2.2 python3.* pymysql 运行报错问题

旧城等待， 2022-02-23 13:37 323阅读 0赞

### django2.2 python3.\* pymysql 运行报错问题 ###

*   *  Python3.\* + django2.2 + pymysql报如下错误
     *   *  正解：

## 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