Django 3.2.2中使用CustomUserManager无法创建超级用户

首先来看你遇到的错误：

文件 "D:\python\gambling_game\gamegambling\users\models.py"，第40行，在create_superuser方法中：
return self.create_user(self, email, pseudo, first_name, last_name, birth_date, password, **other_fields)
TypeError: create_user() 接受7个位置参数，但传入了8个

核心问题：多传了self参数 #

在create_superuser里调用create_user时，你完全不需要手动传递self！因为当你用self.create_user()这种方式调用类的实例方法时，Python会自动把当前的CustomUserManager实例作为第一个参数（也就是create_user方法里的self）传递进去。你额外加了一个self，直接导致参数总数多了一个，这就是触发TypeError的根源。

还有几个小拼写/语法错误需要修正 #

除了上面的核心问题，代码里还有几个细节错误也会导致运行异常：

• self.nomalize_email拼写错误：正确的方法名是self.normalize_email（注意是normalize，少了个r）
• 函数名bith_isValid拼写错误：应该改成birth_isValid（对应birth_date的拼写，把bith改成birth）
• self.models错误：BaseUserManager里对应的属性是self.model（单数形式，不是复数models）

修正后的完整代码 #

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import AbstractBaseUser , PermissionsMixin , BaseUserManager
from django.utils.translation import gettext_lazy as _
from datetime import datetime

# 创建模型
class CustomUserManager(BaseUserManager):
    def create_user(self, email, pseudo, first_name, last_name, birth_date, password, **other_fields):
        if not email:
            raise ValueError(_('Please enter an email address'))
        # 修正拼写错误：nomalize → normalize
        email = self.normalize_email(email)
        # 修正函数名拼写：bith_isValid → birth_isValid
        if birth_isValid(birth_date):
            birth_date = birth_date
        else:
            raise ValueError(_('birth date not valid'))
        # 修正models → model
        user = self.model(email = email, pseudo = pseudo , first_name = first_name, last_name = last_name, birth_date = birth_date, **other_fields)
        user.set_password(password)
        user.save()
        return user

    def create_superuser(self, email, pseudo, first_name, last_name, birth_date, password, **other_fields):
        other_fields.setdefault('is_staff', True)
        other_fields.setdefault('is_superuser', True)
        other_fields.setdefault('is_active', True)

        if other_fields.get('is_staff') is not True:
            raise ValueError('Superuser must be assigned to is_staff=True')
        if other_fields.get('is_superuser') is not True:
            raise ValueError('Superuser must be assigned to is_superuser=True')
        if other_fields.get('is_active') is not True:
            raise ValueError('Superuser must be assigned to is_active=True')

        # 移除多余的self参数
        return self.create_user(email, pseudo, first_name, last_name, birth_date, password, **other_fields)

# 修正函数名拼写：bith_isValid → birth_isValid
def birth_isValid(date):
    present = datetime.date.today()
    return date < present

class CustomUser (AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(max_length = 255, unique = True)
    pseudo = models.CharField(max_length = 255, unique = True)
    # 名字（名）
    first_name = models.CharField(max_length = 255)
    # 姓氏（姓）
    last_name = models.CharField(max_length = 255)

    USER_GENDER = [
        ('M', 'Male'),
        ('F', 'Female'),
        ('NB', 'Non-Binary')
    ]
    gender = models.CharField(max_length = 2, choices = USER_GENDER, null = True)
    birth_date = models.DateField(auto_now=False, auto_now_add=False)
    balance = models.IntegerField(default = 0)
    profil_picture = models.ImageField(upload_to='profile_image', blank = True)
    is_staff = models.BooleanField(default = False)
    is_active = models.BooleanField(default = False)
    last_login = models.DateTimeField(auto_now=True)
    join_date = models.DateTimeField(default = timezone.now)

    objects = CustomUserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['pseudo','first_name','last_name','birth_date']

    def __str__(self):
        return self.pseudo

把这些修正之后，再尝试创建超级用户应该就能顺利运行了！

内容的提问来源于stack exchange，提问作者urielIsNotMyfavorite