Django的问题：TypeError: ‘set‘ object is not reversible

Django启动异常解析

最新推荐文章于 2024-09-06 21:40:41 发布

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本文记录了一次Django项目启动时遇到的TypeError异常，详细展示了错误堆栈跟踪，并揭示了问题根源在于settings.py文件中MIDDLEWARE配置使用了不正确的数据类型。文中提供了简单有效的解决方案，即确保该设置项使用列表而非集合。

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "D:\Python37\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "D:\Python37\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\management\commands\runserver.py", line 138, in inner_run
    handler = self.get_handler(*args, **options)
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\contrib\staticfiles\management\commands\runserver.py", line 27, in get_handler
    handler = super().get_handler(*args, **options)
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\management\commands\runserver.py", line 65, in get_handler
    return get_internal_wsgi_application()
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\servers\basehttp.py", line 45, in get_internal_wsgi_application
    return import_string(app_path)
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\utils\module_loading.py", line 17, in import_string
    module = import_module(module_path)
  File "D:\Python37\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 "D:\PyCharm\py_place\djangoSimpleproProject1\djangoSimpleproProject1\wsgi.py", line 16, in <module>
    application = get_wsgi_application()
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\wsgi.py", line 13, in get_wsgi_application
    return WSGIHandler()
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\handlers\wsgi.py", line 127, in __init__
    self.load_middleware()
  File "D:\PyCharm\py_place\djangoSimpleproProject1\venv\lib\site-packages\django\core\handlers\base.py", line 39, in load_middleware
    for middleware_path in reversed(settings.MIDDLEWARE):
TypeError: 'set' object is not reversible

抓重点：

TypeError: 'set' object is not reversible

解决办法是：
在setting.py文件中，middleware的{}改成[]……
问题是，我又没改过
就很迷惑，我看了很多大佬的方法，还真就是这个emmmmmmmmmm
想不通