Sindbad~EG File Manager

from sqlalchemy import create_engine, MetaData, Table, insert, select,update,delete,text
from sqlalchemy.sql import and_, or_
from core import app
import json
from .. import engine

#engine = create_engine(app.config['DATABASE_URI'])
# engine = create_engine(app.config['DATABASE_URI'],pool_size=5000,pool_pre_ping=True,pool_recycle=3600)
# engine = create_engine(app.config['DATABASE_URI'],pool_size=20, max_overflow=0)
# engine = create_engine(app.config['DATABASE_URI'],pool_size=5000,max_overflow=100,pool_pre_ping=True,pool_recycle=3600)
# engine = create_engine(app.config['DATABASE_URI'], poolclass=None,pool_size=5000,max_overflow=100,pool_pre_ping=True,pool_recycle=3600)

class Countries():
    def __init__(self):
        try:
            self.meta               = MetaData()
            self.countries          = Table("countries", self.meta,autoload_with=engine)
           
        except Exception as e:
            print(e)

    def get_countries(self):
        with engine.connect() as conn:
            stmt = select(self.countries)
            results = conn.execute(stmt).all()
            return  [dict(r._mapping) for r in results] if results else None