django.db.migrations.exceptions.NodeNotFoundError: Migration users.0001_initial dependencies referen...

最新推荐文章于 2024-11-19 20:54:13 发布

原创最新推荐文章于 2024-11-19 20:54:13 发布 · 232 阅读

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#数据库 #django #sqlite #python #后端

本文解决了一个在更换Python环境后出现的Django迁移错误，详细介绍了如何通过复制特定的迁移文件来修复因环境变更导致的问题。

问题:

(meiduo) D:\python_learn\meiduo_project\meiduo_mall>python manage.py makemigrations
[<RegexURLPattern admins-list ^permission/admins/$>, <RegexURLPattern admins-list ^permission/admins\.(?P<format>[a-z0-9]+)/?$>, <RegexURLPattern admins-detail ^permission/admins/(?P<pk
>[^/.]+)/$>, <RegexURLPattern admins-detail ^permission/admins/(?P<pk>[^/.]+)\.(?P<format>[a-z0-9]+)/?$>, <RegexURLPattern api-root ^$>, <RegexURLPattern api-root ^\.(?P<format>[a-z0-9]
+)/?$>]
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\core\management\__init__.py", line 364, in execute_from_command_line
    utility.execute()
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\core\management\__init__.py", line 356, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\core\management\base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\core\management\base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\core\management\commands\makemigrations.py", line 96, in handle
    loader = MigrationLoader(None, ignore_no_migrations=True)
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\loader.py", line 52, in __init__
    self.build_graph()
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\loader.py", line 274, in build_graph
    raise exc
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\loader.py", line 244, in build_graph
    self.graph.validate_consistency()
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\graph.py", line 261, in validate_consistency
    [n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\graph.py", line 261, in <listcomp>
    [n.raise_error() for n in self.node_map.values() if isinstance(n, DummyNode)]
  File "C:\ProgramData\anaconda3\envs\meiduo\lib\site-packages\django\db\migrations\graph.py", line 104, in raise_error
    raise NodeNotFoundError(self.error_message, self.key, origin=self.origin)
django.db.migrations.exceptions.NodeNotFoundError: Migration users.0001_initial dependencies reference nonexistent parent node ('auth', '0009_auto_20200720_0228')

出现问题原因是之前用的python环境是3.8,但是在使用celery过程中一直报错,网上查阅发现了,celery对windows环境的支持情况和在windows下运行的python版本有关系,所以换了python 3.6版本;

然后发现换了之后出现了上述问题;

解决方法是:

找到之前使用的虚拟环境中的 '0009_auto_20200720_0228' 文件和对应的缓存文件