Python3.7 +Django 项目注册应用时提示：'***' must supply a name attribute

项目(blog_Django)注册应用(book)时提示错误信息：[book.apps.AppConfig] must supply a name attribute

错误写法:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'book.apps.AppConfig', #引用应用错误写法
]

正确写法：

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