Populate script not working

I've created a population script to test my website - please see below - but I get the following error message: django.contrib.auth.models.DoesNotExist: User matching query does not exist.

Given that I've created a hypothetical user, I'm not sure why this is?

Any suggestions would much appreciated.

Thank you.

Jeff

EDIT : I have done both makemigrations and migrate.

import os
import django

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mynowandthen.settings')
django.setup()

from django.contrib.auth.models import User
from nowandthen.models import Picture, Comment, UserProfile

def populate():
banana_user = [{'username': 'Banana','email': 'Banana@cat.com',
'password': 'Banana1234'},]
johann_user = [{'username': 'Banana', 'email': 'Banana@cat.com',
'password': 'Banana1234'},]
wmffre_user = [{'username': 'Wmffre', 'email': 'Wmffre@cat.com',
'password': 'Wmffre1234'},]


maryhill_comments = [{'user': banana_user,
'body': 'wowo I love this photo - reminds me of when I used to live there!'},
{'user': johann_user,'body': 'I love Maryhill - its such a pretty part of Glasgow lol'},
{'user': wmffre_user,'body': 'gonnae no dae that lol', 'user_id': 3}]

fireworks_comments = [{'user': banana_user,'body': 'amazing fireworks - thanks for sharing :)'},
{'user': johann_user,'body': 'love fireworks, love this, love YOU!'},
{'user': wmffre_user,'body': 'whoop!'}]

cityscape_comments = [{'user': banana_user,'body': 'more pics like this one please!!'},
{'user': johann_user,'body': 'what a sucky picture hahahaaaa'},
{'user': wmffre_user,'body': 'great - love it!'}]

pics = {'Maryhill': {'comments': maryhill_comments,
'image': 'shared_pics/View-from-kitchen-window-of-Maryhill-tenements.1970.jpg',
'title': 'Maryhill Laundry',
'description': 'back view',
'tag_one': 'Maryhill',
'tag_two': 'Laundry',
'era': '1970s',
'likes': 64},
'Fireworks': {'comments': fireworks_comments,
'image': 'shared_pics/fireworks.jpg',
'title': 'Glasgow Fireworks',
'description': 'Fireworks at Glasgow Green',
'tag_one': 'Glasgow',
'tag_two': 'Fireworks',
'era': '2010s',
'likes': 32},
'Cityscape': {'comments': cityscape_comments,
'image': 'shared_pics/glasgow_cityscape_copy.jpg',
'title': 'Glasgow Cityscape',
'descrpition': 'View over Glasgow',
'tag_one': 'Cityscape',
'tag_two': 'Glasgow',
'era': '1990s',
'likes': 16}}

for pic, pic_data in pics.items():
p = add_picture(pic,
pic_data['image'],
pic_data['title'],
pic_data['description'],
pic_data['tag_one'],
pic_data['tag_two'],
pic_data['era'])
for c in pic_data['comments']:
add_comment(c[0], c[1])

for p in Picture.objects.all():
for c in Comment.objects.filter(picture=p):
print(f' - {p}: {c}')


def add_user(name, email, password):
u = User.objects.get_or_create(username=name, first_name='Test', last_name='User', email=email)[0]
u.set_password(password)
up = UserProfile.objects.get_or_create(user=u)[0]
u.save()
return up


def add_picture(image, title, description, tag_one, tag_two, era, likes=0):
p = Picture.objects.get_or_create(image=image, title=title)[0]
p.description = description
p.tag_one = tag_one
p.tag_two = tag_two
p.era = era
p.like = likes
p.save()
return p


def add_comment(user, body):
u = User.objects.get(username=user)
up = UserProfile.objects.get(user=u)
c = Comment.objects.get_or_create(user=up, body=body)[0]
c.save()
return c


if __name__ == '__main__':
print('Starting Now And Then population script...')
populate()

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