分析：
#获取config文件 CONFIG_MODULE=superset.config
APP_DIR = os.path.dirname(__file__)
CONFIG_MODULE = os.environ.get('SUPERSET_CONFIG','superset.config')
#加载backendsync.json
withopen(APP_DIR +'/static/assets/backendSync.json','r')asf:
frontend_config = json.load(f)
#创建flask app
app = Flask(__name__)
app.config.from_object(CONFIG_MODULE)
#获取conf 配置项的类flask.config.Config
conf = app.config
#################################################################
# Handling manifest file logic at app start
#################################################################
#获取js css 文件键值对 并赋值manifest
MANIFEST_FILE = APP_DIR +'/static/assets/dist/manifest.json'
manifest = {}
