from DB.db_main import * def create_mysql_engine(): # 创建引擎 return create_engine( f"mysql+pymysql://{config.mysql['username']}:{config.mysql['password']}@{config.mysql['url']}:{config.mysql['port']}/{config.mysql['database']}?charset=utf8mb4", # "mysql+pymysql://tom@127.0.0.1:3306/db1?charset=utf8mb4", # 无密码时 # 超过链接池大小外最多创建的链接 max_overflow=0, # 链接池大小 pool_size=5, # 链接池中没有可用链接则最多等待的秒数,超过该秒数后报错 pool_timeout=10, # 多久之后对链接池中的链接进行一次回收 pool_recycle=1, # 查看原生语句(未格式化) echo=True ) class MysqlDbMain(DbMain): def __init__(self): super().__init__() self.engine = create_mysql_engine() self.session = self.get_session()