NameError "SignUpAdmin"

from django.db import models
from django.utils.encoding import smart_unicode
# Create your models here.

class SignUp(models.Model):
first_name = models.CharField(max_length=120, null=True, blank=True)
last_name = models.CharField(max_length=120, null=True, blank=True)
email = models.EmailField()
timestamp = models.DateTimeField(auto_now_add =True, auto_now=False)
updated = models.DateTimeField(auto_now_add=False, auto_now=True)

def __unicode__(self):
return smart_unicode(self.email)
pass
from django.contrib import admin
#Everything Below this

from .models import SignUp


class SignUpAdmin(admin.ModelAdmin):
class Meta:
model = SignUp

admin.site.register(SignUp, SignUpAdmin)
#code

Hi Guys,
I am really new to Django and Python. I have recently started learning them from a course on Udemy and I got stuck on the first example, making a web app. I'm not sure what I have done wrong but when I run my Django server it comes up with a NameError. I think the app is supposed to handle user data, such as first name,last name and email.
Thanks in advance :)

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