Question

我得到的错误是

django.core.exceptions.ImproperlyConfigured：包含的URLconf “ buttonpython.urls”似乎没有任何模式。如果你查看文件中的有效模式，则问题可能是由于循环导入。

我正在遵循较旧的django教程，因为从字面上看，我可以找到所有这些并得到他的错误。这是urls.py：

from . import views
from django.contrib import admin
from django.urls import path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', views.button)
]

Settings.py（之所以包括在内，是因为我在其中找到了buttonpython.urls变量）：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'buttonpython.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': ['templates'],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'buttonpython.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/2.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.2/howto/static-files/

STATIC_URL = '/static/'

Views.py：

from django.shortcuts import render
from . import urls.py
import requests
from bs4 import BeautifulSoup

def button(request):
    return render(request, 'home.html')

def output(request):
    def trade_spider(max_pages):
        page = 1
        data = ''
        while(page <= max_pages):
                search = 'Ipad'
                url = 'https://www.ebay.com/sch/i.html?_from=R40&_nkw=' + search + '&_sacat=0&_pgn=' + str(page)
                src = requests.get(url)
                text = src.text
                soup = BeautifulSoup(text, features="html.parser")
                for link in soup.findAll('a', {'class': 's-item__link'}):
                        href = link.get('href')
                        title = link.string
                        if(title == None):
                            title = "Sorry the title was unavailable however you can check the price."
                        price = get_item_price(href)
                        data += href + '\n' + title + '\n' + price + '\n'

                page+=1
        return data

    def get_item_price(item_url):
        src = requests.get(item_url)
        text = src.text
        soup = BeautifulSoup(text, features="html.parser")
        for item_price in soup.findAll('span', {'class': 'notranslate'}):
                price = item_price.string
                return price

    data = trade_spider(1)
    return render(request, 'home.html', {'data':data})

我很沮丧，将不胜感激。

Answer 1

如错误所述，您有一个循环导入。由于某些原因，您的views.py导入urls.py。没有理由这样做，您应该删除该导入。

Answer 2

开始项目：

django-admin.py startproject buttonpython

cd buttonpython

启动应用程序：

django-admin.py startapp app_name

settings.py：

INSTALLED_APPS = [
        'django.contrib.admin',
        'django.contrib.auth',
        'django.contrib.contenttypes',
        'django.contrib.sessions',
        'django.contrib.messages',
        'django.contrib.staticfiles',

        'app_name',
    ]

app_name/views.py与问题中的views.py相同。不导入urls.py。

urls.py：

from app_name import views
from django.contrib import admin
from django.urls import path

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', views.button, name="home")
]

配置不当：包含的URLconf'buttonpython.urls'似乎没有任何模式

2 个答案: