Python, SQL Server - Connect and get data with SqlAlchemy

SqlAlchemyGet.py

from sqlalchemy import create_engine, MetaData, Table
from sqlalchemy.orm import mapper
from sqlalchemy.sql import select


class MyTable(object):
    pass


# Trusted Connection
engine = create_engine('mssql+pymssql://hostname[\\SQLEXPRESS2008]/dbname')

# Password connection
# engine = create_engine('mssql+pymssql://username:password@hostname[\\SQLEXPRESS2008]/dbname')


metadata = MetaData(engine)
my_table_instance = Table('MyTable', metadata, autoload=True)
mapper(MyTable, my_table_instance)

conn = engine.connect()
s = select([MyTable.ColumnName]).where(MyTable.ID == 802)
res = conn.execute(s)
row = res.fetchone()
res = None if row is None else row['ColumnName']

print(res)