Django NameError：未定义“版本”（运行服务器错误）

Question

我正在尝试使用django教程中所述的runserver命令。 我正在使用pipenv环境，但也尝试在anaconda和virtualenv上使用。

当我在项目文件夹中键入以下内容时：

py manage.py runserver

我收到此错误：

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x0000000003FE2840>
Traceback (most recent call last):
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\utils\autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\utils\autoreload.py", line 248, in raise_last_exception
    raise _exception[1]
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\core\management\__init__.py", line 337, in execute
    autoreload.check_errors(django.setup)()
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\utils\autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\apps\registry.py", line 112, in populate
    app_config.import_models()
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\apps\config.py", line 198, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\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 "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\models\base.py", line 101, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\models\base.py", line 305, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\models\options.py", line 203, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\__init__.py", line 33, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\utils.py", line 202, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\utils.py", line 110, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\DOCUMENTOS\.virtualenvs\DOCUMENTOS-A1FIg8A2\lib\site-packages\django\db\backends\sqlite3\base.py", line 10, in <module>
    from sqlite3 import dbapi2 as Database
  File "c:\programdata\anaconda3\Lib\sqlite3\__init__.py", line 23, in <module>
    from sqlite3.dbapi2 import *
  File "c:\programdata\anaconda3\Lib\sqlite3\dbapi2.py", line 49, in <module>
    version_info = tuple([int(x) for x in version.split(".")])
NameError: name 'version' is not defined

什么可能导致此错误？