input: def create_user_model():
      """Create a Django application with a model that stores the name, address, and email of a user.
      Complete the following tasks:
      1. Create a Django app using `django-admin startproject`.
      2. Define a `User` model with the fields `name`, `address`, and `email`.
      3. Perform migrations for the model.
      >>> create_user_model()
      None
      """
output:     
      from django.db import models
      from django.core.management import call_command
      import os
  
      # Create a Django app
      os.system('django-admin startproject myproject')
      os.chdir('myproject')
      os.system('python manage.py startapp myapp')
  
      # Define the User model
      class User(models.Model):
          name = models.CharField(max_length=100)
          address = models.CharField(max_length=200)
          email = models.EmailField(max_length=100)
  
      # Perform migrations
      os.system('python manage.py makemigrations')
      os.system('python manage.py migrate')
  