Django model import issue via Python interpreter - django-models

Question

I was trying to add data to my fields via the Python interpreter(manage.py shell). I can import the other two models (Tag, Startup), but Newslink model throws an error:
...
Traceback (most recent call last):
File "/usr/lib/python3.5/code.py line 91, in runcode
exec(code, self.locals)
File "<console>", line1 in <module>
ImportError: cannot import name 'Newslink'
Typed in Python interpreter:
from organizer.models import Tag
from organizer.models import Startup
from organizer.models import Newslink <--- issue
Here is my /organizer/models.py file:
from django.db import models
class Tag(models.Model):
name = models.CharField(max_length=31,unique = True)
slug = models.SlugField(
max_length=31,
unique = True,
help_text ="A label for URL config.")
def __str__(self):
return self.name.title()
class Meta:
ordering = ['name']
class Startup(models.Model):
name = models.CharField(
max_length=31
,db_index= True)
slug = models.SlugField(
max_length= 31,
unique = True,
help_text = "A label for URL config.")
description = models.TextField()
founded_date = models.DateField('date founded')
contact = models.EmailField()
website = models.URLField(max_length =255)
tags = models.ManyToManyField(Tag)
def __str__(self):
return self.name
class Meta:
ordering = ['name']
get_latest_by = 'founded_date'
class NewsLink(models.Model):
title = models.CharField(max_length=63)
pub_date = models.DateField('date published')
link = models.URLField(max_length=255)
startup = models.ForeignKey(Startup)
def __str__ (self):
return"{}:{}".format (self.startup, self.title)
class Meta:
verbose_name = 'news article'
ordering = ['-pub_date']
get_latest_by = 'pub_date'