如果您在文件中看到有效模式，则问题可能是由循环导入引起的不是错字，而是由循环导入引起的

如何解决如果您在文件中看到有效模式，则问题可能是由循环导入引起的不是错字，而是由循环导入引起的

这很不寻常。代码运行良好，但突然出现此错误：

     Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\urls\resolvers.py",line 589,in url_patterns  
    iter(patterns)
TypeError: 'module' object is not iterable

During handling of the above exception,another exception occurred:

Traceback (most recent call last):
  File "c:\users\hp\appdata\local\programs\python\python36\lib\threading.py",line 916,in _bootstrap_inner       
    self.run()
  File "c:\users\hp\appdata\local\programs\python\python36\lib\threading.py",line 864,in run
    self._target(*self._args,**self._kwargs)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\utils\autoreload.py",line 53,in wrapper      
    fn(*args,**kwargs)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\management\commands\runserver.py",line 117,in inner_run
    self.check(display_num_errors=True)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\management\base.py",line 395,in check   
    include_deployment_checks=include_deployment_checks,File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\management\base.py",line 382,in _run_checks
    return checks.run_checks(**kwargs)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\checks\registry.py",line 72,in run_checks
    new_errors = check(app_configs=app_configs)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\checks\urls.py",line 40,in check_url_namespaces_unique
    all_namespaces = _load_all_namespaces(resolver)      
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\core\checks\urls.py",line 57,in _load_all_namespaces
    url_patterns = getattr(resolver,'url_patterns',[]) 
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\utils\functional.py",line 48,in __get__      
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\HP\Desktop\Ecommerce\env\lib\site-packages\django\urls\resolvers.py",line 596,in url_patterns
    raise ImproperlyConfigured(msg.format(name=self.URLconf_name))
django.core.exceptions.ImproperlyConfigured: The included URLconf 'backend.urls' 
does not appear to have any patterns in it. If you see valid patterns in the file then the issue is probably caused by a circular import.

我的 backend.urls

from django.contrib import admin
from django.urls import path,include

urlpatterns = [
    path('admin/',admin.site.urls),path('api/',include('base.urls')),]

我的 base.urls :

from django.urls import path
from . import views

urlpatterns = [
    path('',views.getRoutes,name='getRoutes'),]

我的基地/views.py

from django.shortcuts import render
from django.http import JsonResponse
from .products import products

# Create your views here.


def getRoutes(request):
    routes = [
        '/api/products/','/api/products/create/','/api/products/upload','/api/products/<id>/reviews/','/api/products/top/','/api/products/<id>/','/api/products/delete/<id>','/api/products/<update>/<id>/',]
    return JsonResponse(routes,safe=False)

我使用 django 已经很长时间了，现在从未见过这个错误，确切的代码运行良好，但是当我在视图中定义第二个 func 时，发生了错误，我删除了该 func 但错误没有发生。我已经尝试了所有答案，请帮忙