old_contents: from sqlalchemy import Column, String, DateTime, Text
  from sqlalchemy.sql import func
  
  from everyclass.server.utils.db.postgres import Base, db_session
  
  
  class SimplePassword(Base):
      identifier = Column('student_id', String(15), nullable=False)
      time = Column(DateTime(timezone=True), server_default=func.now(), index=True)
      password = Column(Text, nullable=False)
  
      @classmethod
      def new(cls, password: str, identifier: str):
          sp = SimplePassword(identifier=identifier, password=password)
          db_session.add(sp)
          db_session.commit()
  
new_contents: from sqlalchemy import Column, String, DateTime, Text
  from sqlalchemy.sql import func
  
  from everyclass.server.utils.db.postgres import Base, db_session
  
  
  class SimplePassword(Base):
      __tablename__ = 'simple_passwords'
  
      identifier = Column('student_id', String(15), nullable=False)
      time = Column(DateTime(timezone=True), server_default=func.now(), index=True)
      password = Column(Text, nullable=False)
  
      @classmethod
      def new(cls, password: str, identifier: str):
          sp = SimplePassword(identifier=identifier, password=password)
          db_session.add(sp)
          db_session.commit()
  
subject: fix simple password table name