from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker


class Foootball(object):
    def __init__(self):
        self.db = self._get_db_session()

    def _get_db_session(self):
        _engine = create_engine("mysql+pymysql://test:123456@localhost/lottery?charset=utf8", pool_pre_ping=True, pool_recycle=3600)
        _DbSession = sessionmaker(bind=_engine)
        return _DbSession()

    def __enter__(self):
        return self

    def __exit__(self, type, value, trace):
        self.db.close()