InvalidRequestError: Table is already defined for this MetaData instance. Specify 'extend_existing=True' to redefine options and columns on an existing Table object.

时间：2018-04-22 15:41:42 收藏：0 阅读：3738

解决方法

添加在导入包后的位置

#models.py
#from .....
if __name__ == ‘__main__‘:
    db.metadata.clear()

参考链接:https://stackoverflow.com/questions/37908767/table-roles-users-is-already-defined-for-this-metadata-instance

原文：https://www.cnblogs.com/edhg/p/8907300.html

InvalidRequestError: Table is already defined for this MetaData instance. Specify &#39;extend_existing=True&#39; to redefine options and columns on an existing Table object.