django-model-mommy

import os import django from django.conf import settings from django.db import models # Minimal Django setup for standalone execution if not settings.configured: os.environ.setdefault('DJANGO_SETTINGS_MODULE', __name__) settings.configure( INSTALLED_APPS=[ 'django.contrib.auth', 'django.contrib.contenttypes', 'myapp' # assuming 'myapp' will be created ], DATABASES={'default': {'ENGINE': 'django.db.backends.sqlite3', 'NAME': ':memory:'}}, DEBUG=True ) django.setup() # Define a simple Django model for demonstration class Author(models.Model): name = models.CharField(max_length=100, unique=True) email = models.EmailField() bio = models.TextField(blank=True, null=True) class Meta: app_label = 'myapp' def __str__(self): return self.name # To ensure the model is 'migrated' in memory for mommy from django.core.management import call_command call_command('makemigrations', 'myapp', interactive=False, verbosity=0) call_command('migrate', 'myapp', interactive=False, verbosity=0) from model_mommy import mommy # 1. Create a single Author instance with random data author_1 = mommy.make(Author) print(f"1. Created author (random): {author_1.name} <{author_1.email}>") # 2. Create multiple Author instances (e.g., 3) authors = mommy.make(Author, _quantity=3) print(f"2. Created {len(authors)} authors (random). Example: {authors[0].name}") # 3. Create an Author instance with specific attributes specific_author = mommy.make(Author, name='Jane Doe', email='jane.doe@example.com') print(f"3. Created author (specific): {specific_author.name} <{specific_author.email}>") # 4. Use mommy.prepare() to create an unsaved instance unsaved_author = mommy.prepare(Author, name='Unsaved Sam') print(f"4. Prepared unsaved author: {unsaved_author.name} (not in DB yet)") # You can then save it manually if needed unsaved_author.save() print(f" Saved unsaved author to DB.")