metadata=MetaData(create_engine("sqlite://",echo=True)
t1=Table("t1",metadata,Column('id',Integer,primary_key...=True))
t2=Table("t2",metadata,Column("id",Integer,primary_key=True))
metadata.create_all()...def map_class_to_some_table(cls,table,entity_name,**kw):
newcls=type(entity_name,(cls,),{})