TypeError at /hello/world/ 'set' object is not reversible

admin · 发表于 2025-4-18 21:50:10

TypeError at /hello/world/'set' object is not reversible
TypeError at /hello/world/'set' object is not reversibleRequest Method: GETRequest URL: http://192.168.7.26:5000/hello/world/Django Version: 3.0.5Exception Type: TypeErrorException Value: 'set' object is not reversibleException Location: C:\Users\admin\python3.8vitual\lib\site-packages\django\urls\resolvers.py in _populate, line 455Python Executable: C:\Users\admin\python3.8vitual\Scripts\python.exePython Version: 3.8.8Python Path: ['C:\\Users\\admin\\Desktop\\myproject', 'C:\\Users\\admin\\Desktop\\myproject', 'C:\\Program Files\\JetBrains\\PyCharm ' '2019.3\\plugins\\python\\helpers\\pycharm_display', 'C:\\Program Files\\Python38\\python38.zip', 'C:\\Program Files\\Python38\\DLLs', 'C:\\Program Files\\Python38\\lib', 'C:\\Program Files\\Python38', 'C:\\Users\\admin\\python3.8vitual', 'C:\\Users\\admin\\python3.8vitual\\lib\\site-packages', 'C:\\Program Files\\JetBrains\\PyCharm ' '2019.3\\plugins\\python\\helpers\\pycharm_matplotlib_backend']Server time: Tue, 18 Mar 2025 13:44:02 +0000
在python控制台上调试错误如下：Internal Server Error: /hello/world/Traceback (most recent call last): File "C:\Users\admin\python3.8vitual\lib\site-packages\django\core\handlers\exception.py", line 34, in inner response = get_response(request) File "C:\Users\admin\python3.8vitual\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response response = self.process_exception_by_middleware(e, request) File "C:\Users\admin\python3.8vitual\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "C:\Users\admin\Desktop\myproject\hello\views.py", line 9, in hello_world print(reverse(hello_world)) File "C:\Users\admin\python3.8vitual\lib\site-packages\django\urls\base.py", line 87, in reverse return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) File "C:\Users\admin\python3.8vitual\lib\site-packages\django\urls\resolvers.py", line 617, in _reverse_with_prefix self._populate() File "C:\Users\admin\python3.8vitual\lib\site-packages\django\urls\resolvers.py", line 455, in _populate for url_pattern in reversed(self.url_patterns):TypeError: 'set' object is not reversible[18/Mar/2025 21:43:50] "GET /hello/world/ HTTP/1.1" 500 81009C:\Users\admin\Desktop\myproject\hello\views.py changed, reloading.Watching for file changes with StatReloaderPerforming system checks...

python调试代码出错；

代码如下：def hello_world(request): print(reverse('hello_world')) return HttpResponse('hello world')
这个时我们在测试逆向解析的时候报的。怎么都不知道哪儿错了。
怀疑自己的配置有问题，各种测试好像找不到问题所在。
然后想着这个是不是引号的位置不对，带着这个想法修改下def hello_world(request): print('reverse(hello_world)') return HttpResponse('hello world')
再次访问，既然不报错了。正常反馈结构。
并在控制台上返回结果为：reverse(hello_world)[18/Mar/2025 21:41:27] "GET /hello/world/ HTTP/1.1" 200 11
问题暂时解决了，但想不通为啥和老师讲的做的有些区别，难道是因为pycharm版本不一致导致的吗？

admin · 发表于 2025-4-19 08:17:05

视图函数改成单引号在外面
def hello_world(request):
print('reverse(hello_world)')
return HttpResponse('hello world')

def hello_world(request):
'reverse(hello_world)'
return HttpResponse('hello world')

[19/Mar/2025 08:12:55] "GET /hello/world/ HTTP/1.1" 200 11

reverse(hello_world)

或者这样子写也行：
def hello_world(request):
reverse1 = 'reverse(hello_world)'
print(reverse1)
return HttpResponse('hello world')

都可以获取到逆向解析，并且成功。

admin · 发表于 2025-4-19 08:21:13

说明我们上面没有配置成功。出现问题了。只是打印处理reverse(hello world) .

admin · 发表于 2025-4-23 22:35:38

Internal Server Error: /hello/china/
Traceback (most recent call last):
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
response = get_response(request)
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
response = self.process_exception_by_middleware(e, request)
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\admin\Desktop\testmyproject\hello\views.py", line 11, in hello_china
url= reverse('hello_china')
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\urls\base.py", line 87, in reverse
return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\urls\resolvers.py", line 617, in _reverse_with_prefix
self._populate()
  File "C:\Users\admin\python3.8.2-vitual\lib\site-packages\django\urls\resolvers.py", line 455, in _populate
for url_pattern in reversed(self.url_patterns):
TypeError: 'set' object is not reversible
[23/Mar/2025 22:26:12] "GET /hello/china/ HTTP/1.1" 500 81834

问题的原因找到了，是因为根路径下的urls.py 文件中

urlpatterns = {
path('admin/', admin.site.urls),
path('hello/', hello_world),
path('hello/', include('hello.urls')),
}
需要改成
urlpatterns = [
path('admin/', admin.site.urls),
path('hello/', hello_world),
path('hello/', include('hello.urls')),
]
问题完美解决。

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TypeError at /hello/world/ 'set' object is not reversible

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