Query By Name

import os
import sys

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, ForeignKey, Integer, String

Base = declarative_base()

class City(Base):
    __tablename__ = 'city'
    # Here we define columns for the table person
    # Notice that each column is also a normal Python instance attribute.
    id = Column(Integer, primary_key=True)
    name = Column(String(50), nullable=False)
    province = Column(String(50), nullable=True)
    country = Column(String(50), nullable=True)

engine = create_engine('sqlite:///city.db')
Base.metadata.bind = engine

DBSession = sessionmaker()

DBSession.bind = engine

session = DBSession()

city = session.query(City).filter(City.name == 'Toronto').first()

city

city.name