text: from sqlalchemy import Column, Integer, String, Boolean
  from sqlalchemy.ext.declarative import declarative_base
  from sqlalchemy.orm import relationship, sessionmaker
  from sqlalchemy import create_engine
  
  Base = declarative_base()
  
  class Knowledge(Base):
  	__tablename__='know'
  	IDnumber=Column(Integer,primary_key=True)
  	name=Column(String)
  	topic=Column(String)
  	rating=Column(Integer)
  	def __repr__(self):
  		return("\n If you want to learn about {}, "
  			"you should look at the Wikipedia article called {}. "
  			"We gave this article a rating of {} out of 10! ").format(
  			self.topic,
  			self.name,
  			self.rating)
  
  site1= Knowledge(IDnumber=1,name="sport",topic="swimming",rating=8)
  # print(site1.__repr__())
  
  
  