FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future.  Set it to True or False to suppress this warning.
  'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '

flask_sqlalchemy 在使用中报这么一个警告

解决方式

在配置文件中添加

SQLALCHEMY_TRACK_MODIFICATIONS = True

完整配置是

HOST = "127.0.0.1"
PORT = "3306"
DB = "smart_medicine"
USER = "root"
PASS = ""
CHARSET = "utf8"
DB_URI = "mysql+pymysql://{}:{}@{}:{}/{}?charset={}".format(USER, PASS, HOST, PORT, DB, CHARSET)
SQLALCHEMY_DATABASE_URI = DB_URI
# SQLALCHEMY_TRACK_MODIFICATIONS = True