How to solve error raised : No module named 'django.contrib.customuser'
Question: I am new to Django, trying to create a custom user for my project. When I am
running the server, it raises No module named 'django.contrib.customuser' and
sometimes, Manager isn't available; auth.User has been swapped for
Mysite.CustomUser. Even i changed my settings: django.contrib.auth to
django.contrib.custommuser. Please someone help me solving this. Here's my
code

### models.py:

    
    
    from datetime import datetime
    from django.db import models
    from django.contrib.auth.models import User, BaseUserManager, AbstractUser,   AbstractBaseUser
    
    from django.utils.translation import ugettext_lazy as _
    
    class CustomUserManager(BaseUserManager):
    
        def _create_user(self, username, email, u, password, is_staff, is_active, **extra_fields):
            now = datetime.now()
            if not email:
                raise ValueError('Users must have an email address')
            email = self.normalize_email(email)
            user = self.model(username=username, email=email, u=u, password=password,
                 is_staff=is_staff, is_active=False, last_login=now, date_joined=now, **extra_fields)
    
            user.set_password(password)
            user.save(using=self._db)
            return user
    
        def create_user(self, username, email, u, password = None, **extra_fields):
            return self._create_user(username, email, u, False, False, **extra_fields)
    
        def create_superuser(self, username, email, u, password = None):
            user = self._create_user(username, email, u, password, True, True)
    
            user.set_password(password)
            user.is_active=True
            user.is_admin = True
    
            user.is_superuser = True
            user.save(using=self._db) 
            return user
    
    
    
    class CustomUser(AbstractBaseUser):
        username = models.CharField(max_length=30)
        email = models.EmailField(max_length=30, unique=True, db_index=True)
        password1 = models.CharField(max_length=30)
        password2 = models.CharField(max_length=30)
        CHOICES= (('LinkedinUser', 'LinkedinUser'),('FacebookUser', 'FacebookUser'),)
        u = models.CharField(choices=CHOICES, max_length=20, default=0)
        date_joined  = models.DateTimeField(_('date joined'), default=datetime.now)
        is_active    = models.BooleanField(default=True)
        is_admin     = models.BooleanField(default=False)
        is_staff     = models.BooleanField(default=False)
        is_superuser = models.BooleanField(default=False)
        REQUIRED_FIELDS = ('username', 'u')
        USERNAME_FIELD = 'email'
        objects = CustomUserManager()
    
        class Meta:
            verbose_name = _('user')
            verbose_name_plural = _('users')  
    
        def get_full_name(self):
            # The user is identified by their email address
            return self.email
    
        def get_short_name(self):
            # The user is identified by their email address
            return self.email
    
        def __str__(self):              # __unicode__ on Python 2
            return self.email
    
        def has_perm(self, perm, obj=None):
            "Does the user have a specific permission?"
            # Simplest possible answer: Yes, always
            return True
    
        def has_module_perms(self, app_label):
            "Does the user have permissions to view the app `app_label`?"
            # Simplest possible answer: Yes, always
            return True
    
        @property
        def is_staff(self):
            return self.is_admin
    

### forms.py

    
    
    from django import forms
    from django.contrib.auth.forms import UserChangeForm, UserCreationForm
    
    from .models import CustomUser#, LinkedInUser, FacebookUser
    import re
    from django.contrib.auth.models import User
    from django.utils.translation import ugettext_lazy as _
    from django.contrib.auth import get_user_model
    
    
    class CustomUserForm(forms.ModelForm):
    
        username = forms.RegexField(regex=r'^\w+$', widget=forms.TextInput(attrs=dict(required=True, max_length=30)), label=_("username"), error_messages={ 'invalid': _("This value must contain only letters, numbers and underscores.") })
        email = forms.EmailField(widget=forms.TextInput(attrs=dict(required=True, max_length=30)), label=_("Email address"))
        password1 = forms.CharField(widget=forms.PasswordInput(attrs=dict(required=True, max_length=30, render_value=False)), label=_("Password"))
        password2 = forms.CharField(widget=forms.PasswordInput(attrs=dict(required=True, max_length=30, render_value=False)), label=_("Password (again)"))
        CHOICES= (('LinkedinUser', 'LinkedinUser'),('FacebookUser', 'FacebookUser'),)
        u = forms.ChoiceField(choices=CHOICES, label='ID', widget=forms.RadioSelect()) 
    
        class Meta :
            model = CustomUser
            fields = [ 'username', 'email', 'password1', 'password2', 'u' ]
    
            User = get_user_model()
    
        def clean_name(self):
            try:
                user = User.objects.get(username__iexact=self.cleaned_data['username'])
            except User.DoesNotExist:
                return self.cleaned_data['username']
            raise forms.ValidationError(_("The username already exists. Please try another one."))
    
        def clean(self):
            if 'password1' in self.cleaned_data and 'password2' in self.cleaned_data:
                if self.cleaned_data['password1'] != self.cleaned_data['password2']:
                    raise forms.ValidationError(_("The two password fields did not match."))
            return self.cleaned_data
    
    
    class CustomUserCreationForm(UserCreationForm):
        """
        A form that creates a user, with no privileges, from the given email and
        password.
        """
    
        def __init__(self, *args, **kargs):
            super(CustomUserCreationForm, self).__init__(*args, **kargs)
            del self.fields['username']
    
        class Meta:
            model = CustomUser
            fields = ("email",)    
    

### admin.py

    
    
    from django.contrib import admin
    from django.contrib.auth.admin import UserAdmin
    from django.utils.translation import ugettext_lazy as _
    from django.contrib.auth import get_user_model
    
    from .models import CustomUser
    from .forms import CustomUserCreationForm
    
    class CustomUserAdmin(admin.ModelAdmin):
        form = CustomUserCreationForm
    
    admin.site.register(CustomUser, CustomUserAdmin)
    

### backends.py:

    
    
    from models import CustomUser
    
    class CustomUserAuth(object):
    
        def authenticate(self, username=None, password=None):
            try:
                user = CustomUser.objects.get(email=username)
                if user.check_password(password):
                    return user
            except CustomUser.DoesNotExist:
                return None
    
        def get_user(self, user_id):
            try:
                user = CustomUser.objects.get(pk=user_id)
                if user.is_active:
                    return user
                return None
            except CustomUser.DoesNotExist:
                return None
    


Answer: Remove `django.contrib.customuser` and `django.contrib.auth` from your
`INSTALLED_APPS`. There is no `customuser` application under `django.contrib`
package, and `auth` can be omitted (to avoid potential name colission).

Furthermore, I suggest you re-read [the Django docs on auth
customization](https://docs.djangoproject.com/en/1.9/topics/auth/customizing/).
Most of the changes are optional, and your code should be simplified by re-
using the base classes, unless your methods vary of course. The docs also
mentions that for swapping User models, you are required to update settings to
`AUTH_USER_MODEL = 'customuser.CustomUser'`.

