text: import os
  
  basedir = os.path.abspath(os.path.dirname(__file__))#获取当前.py文件的绝对路径
  
  class Config:
      SECRET_KEY = os.environ.get('SECRET_KEY') or 'you will never guess'
  
      SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URI') or 'sqlite:///' + os.path.join(basedir, 'app.db')
      SQLALCHEMY_TRACK_MODIFICATIONS = False