Django 1.11.4:Django.core.exceptions.AppRegistryNotReady:应用程序不是'；还没装呢

我正在学习如何使用Django framework进行web编程，当我试图从我的

应用程序模型中创建我的
艺术家的
实例时，收到了此错误消息。我使用Python 3.6版本和Django 1.11.4版本

 File "<stdin>", line 1, in <module>
      File ".\app\models.py", line 9, in <module>
        class Artist(models.Model):
      File "C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site-packages\django\db\models\base.py", line 110, in __new__
        app_config = apps.get_containing_app_config(module)
      File "C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site-packages\django\apps\registry.py", line 247, in get_containing_app_config
        self.check_apps_ready()
      File "C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site-packages\django\apps\registry.py", line 125, in check_apps_ready
        raise AppRegistryNotReady("Apps aren't loaded yet.")
    django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

文件“”，第1行，在
文件“.\app\models.py”，第9行，在
班级艺术家（模特、模特）：
文件“C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site packages\django\db\models\base.py”，第110行，新__
app\u config=apps.get\u包含app\u config（模块）
文件“C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site packages\django\apps\registry.py”，第247行，包含应用程序配置的get_
self.check_apps_ready（）
文件“C:\Users\kadjo\documents\visual studio 2015\Projects\DatabaseFun\DatabaseFun\env\lib\site packages\django\apps\registry.py”，第125行，在check\u apps\u ready中
raise AppRegistryNotReady（“应用程序尚未加载。”）
django.core.exceptions.AppRegistryNotReady:尚未加载应用程序。
这是我的型号包装代码

from django.db import models

# Create your models here.

class Artist(models.Model):
    name = models.CharField("artist", max_length=50)
    year_formed = models.PositiveIntegerField()

class Album(models.Model):
    name = models.CharField("album", max_length=50)
    artist = models.ForeignKey(Artist)

"""
Django settings for DatabaseFun project.

Generated by 'django-admin startproject' using Django 1.9.1.

For more information on this file, see
https://docs.djangoproject.com/en/1.9/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.9/ref/settings/
"""

import os
import posixpath

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'ec5ea5b6-ee2d-43db-8bb8-4562d88788ea'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'app',
    # Add your apps here to enable them
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'DatabaseFun',
]

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

ROOT_URLCONF = 'DatabaseFun.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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 = 'DatabaseFun.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.9/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/1.9/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/1.9/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/1.9/howto/static-files/

STATIC_URL = '/static/'

STATIC_ROOT = posixpath.join(*(BASE_DIR.split(os.path.sep) + ['static']))

这是我的应用程序设置包代码

from django.db import models

# Create your models here.

class Artist(models.Model):
    name = models.CharField("artist", max_length=50)
    year_formed = models.PositiveIntegerField()

class Album(models.Model):
    name = models.CharField("album", max_length=50)
    artist = models.ForeignKey(Artist)

"""
Django settings for DatabaseFun project.

Generated by 'django-admin startproject' using Django 1.9.1.

For more information on this file, see
https://docs.djangoproject.com/en/1.9/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.9/ref/settings/
"""

import os
import posixpath

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'ec5ea5b6-ee2d-43db-8bb8-4562d88788ea'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'app',
    # Add your apps here to enable them
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'DatabaseFun',
]

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

ROOT_URLCONF = 'DatabaseFun.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        '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 = 'DatabaseFun.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.9/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/1.9/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/1.9/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/1.9/howto/static-files/

STATIC_URL = '/static/'

STATIC_ROOT = posixpath.join(*(BASE_DIR.split(os.path.sep) + ['static']))

首先将这些行添加到settings.py文件的顶部

import django
django.setup()

然后如果这不起作用，请尝试从已安装的应用程序列表中逐个删除第三方应用程序。您可以稍后再次加载它们，这可能是因为依赖于某些第三方应用程序。
您是如何运行此代码的？如果独立运行，则必须使用django.setup（）

见：