如何忽略声明性SQLAlchemy类的传入参数？

from sqlalchemy import Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base()

class User(Base):
    __tablename__ = 'users'
    
    id = Column(Integer, primary_key=True)
    username = Column(String)
    password = Column(String)
    
    def __init__(self, **kwargs):
        # 忽略传入的参数
        self.username = kwargs.get('username')
        # 不忽略传入的参数
        self.password = kwargs.get('password')