text: 
  from dao import db,Base
  from datetime import datetime
  
  class UsuarioModel(Base):
      __tablename__ = 'usuarios'
      id = db.Column(db.Integer, primary_key=True)
      dataCadastro = db.Column(db.DateTime)
      listas = db.relationship("ListaModel",back_populates="usuario")
  
      def __init__(self,nome,email):
          self.nome = nome
          self.email = email
          self.dataCadastro = datetime.now()
  
      def adicionar(self):
          db.session.add(self)
          db.session.commit()
  
      @classmethod
      def encontrar_pelo_id(cls, _id):
          return cls.query.filter_by(id=_id).first()
  
      @classmethod
      def encontrar_pelo_nome(cls, nome):
          return cls.query.filter_by(nome=nome).first()
  
      @classmethod
      def listar(cls):
          return cls.query.all()
  
      def remover(self):
          db.session.delete(self)
          db.session.commit()
  