Django AttributeError：“user”对象没有属性“”set_password“”，但未重写user

from django.contrib.auth.models import AbstractBaseUser, BaseUserManager, PermissionsMixin
from django.db import models

class CustomUserManager(BaseUserManager):
    def create_user(self, email, password=None, **extra_fields):
        if not email:
            raise ValueError('The Email field must be set')
        email = self.normalize_email(email)
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user

    def create_superuser(self, email, password=None, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)
        return self.create_user(email, password, **extra_fields)

class CustomUser(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(unique=True)
    # 添加其他自定义字段

    objects = CustomUserManager()

    USERNAME_FIELD = 'email'
    # 添加其他必需的字段

    def set_password(self, raw_password):
        # 自定义的密码设置逻辑
        # ...

    def get_full_name(self):
        # 返回用户的全名
        # ...

    def get_short_name(self):
        # 返回用户的简短名字
        # ...

    # 添加其他自定义方法和属性