Custom User Admin

admin.py

from django import forms
from django.contrib import admin
from django.utils.translation import ugettext as _
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import ReadOnlyPasswordHashField

from .models import User


class UserCreationForm(forms.ModelForm):
    password1 = forms.CharField(
        label='Password',
        widget=forms.PasswordInput)
    password2 = forms.CharField(
        label='Password confirmation',
        widget=forms.PasswordInput)

    class Meta:
        model = User
        fields = ('email',)

    def clean_password2(self):
        # Check that the two password entries match
        password1 = self.cleaned_data.get('password1')
        password2 = self.cleaned_data.get('password2')
        if password1 and password2 and password1 != password2:
            msg = "Passwords don't match"
            raise forms.ValidationError(msg)
        return password2

    def save(self, commit=True):
        user = super(UserCreationForm, self).save(commit=False)

        user.set_password(self.cleaned_data['password1'])
        if commit:
            user.save()
        return user


class UserChangeForm(forms.ModelForm):
    password = ReadOnlyPasswordHashField(
        label=_("Password"),
        help_text=_("Raw passwords are not stored, so there is no way to see "
                    "this user's password, but you can change the password "
                    "using <a href=\"password/\">this form</a>."))

    class Meta:
        model = User
        fields = ('password',)

    def clean_password(self):
        return self.initial["password"]


class CustomUserAdmin(UserAdmin):
    add_form = UserCreationForm
    form = UserChangeForm

    list_display = ('id', 'email')
    list_filter = ('is_superuser', 'groups')
    search_fields = ('email',)
    ordering = ('email',)
    filter_horizontal = ('groups', 'user_permissions',)

    fieldsets = (
        (None, {'fields': ('email', 'password')}),
        ('Info', {'fields': ('first_name', 'last_name', 'headshot',)}),
        ('Permissions', {'fields': ('is_active',
                                    'is_superuser',
                                    'is_staff',
                                    'groups',
                                    'user_permissions')}),
    )

    add_fieldsets = (
        (None, {
            'classes': ('wide',),
            'fields': ('email', 'password1', 'password2')}),
    )

admin.site.register(User, CustomUserAdmin)

for future reference, you can copy and past, except for the headshot field in line 67.