update

evm_monitor/database.py

 '''
 Author: your name
 Date: 2021-06-28 16:43:12
-LastEditTime: 2021-06-29 18:38:32
+LastEditTime: 2021-06-29 19:12:59
 LastEditors: Please set LastEditors
 Description: In User Settings Edit
 FilePath: \ewebengine\tools\evm_monitor\database.py
 '''
 from datetime import datetime
-from typing import Protocol
 from sqlalchemy import create_engine
 from sqlalchemy import Column, Integer, String, Float
 from sqlalchemy.ext.declarative import declarative_base