该问题可能是由循环进口引起的

Question

我正在尝试为Django项目运行服务器，它向我显示此错误： 包含的URLconf'Smartfarmer.urls'似乎没有任何模式。如果您在文件中看到有效的模式，则说明问题可能是由循环导入引起的。

即使同一项目在另一个环境中也可以正常工作

我试图检查网址中是否有任何错误，但我相信一切都很好

我的项目的urls文件： smartfarmer.urls：

from django.conf.urls import include, url
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static

from main_app import views


urlpatterns = [
    url(r'^admin/',admin.site.urls),
    url(r'^',
        include('main_app.urls')),
     url(r'^detect/',
        include('detect.urls')),
]


if settings.DEBUG:
    urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
    urlpatterns += static(settings.MEDIA_URL,document_root=settings.MEDIA_ROOT)

我的应用程序网址：

main_app.urls：

from django.conf.urls import url
from . import views
urlpatterns = [
    url(r'^$', views.index),
]

detect.urls：

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^result/$', views.result, name='result'),
]

Answer 1

第一种方式：

smartfarmer.urls：

from django.conf.urls import include, url
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static


urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^', include('main_app.urls', namespace="main")),
    url(r'^detect/', include('detect.urls', namespace="detect")),
]

main_app.urls：

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$', views.index, name="index"),
]

第二种方式：

main_app.urls：

from django.conf.urls import url
from . import views

app_name = "main"
urlpatterns = [
    url(r'^$', views.index, name="index"),
]

detect.urls：

from django.conf.urls import url
from . import views

app_name = "detect"
urlpatterns = [
    url(r'^result/$', views.result, name='result'),
]