input: 
  from typing import List
  
  
  def create_django_app_and_model(app_name: str, model_fields: List[str]) -> str:
      """Creates a Django application with a model that stores the fields provided in
      the model_fields list. The model fields are expected to be a list of field names 
      and their types (e.g., ['name:CharField', 'address:CharField', 'email:EmailField']).
      The function returns the output of creating and migrating the app.
      
      >>> create_django_app_and_model('myapp', ['name:CharField', 'address:CharField', 'email:EmailField'])
      'Successfully created Django app "myapp" with model fields: name, address, email'
      >>> create_django_app_and_model('userapp', ['firstName:CharField', 'lastName:CharField', 'age:IntegerField'])
      'Successfully created Django app "userapp" with model fields: firstName, lastName, age'
      """
  
output:     from django.core.management import call_command
      from django.db import models
      import os
      import sys
  
      # Create the Django app
      call_command('startapp', app_name)
  
      # Define the model
      class Model(models.Model):
          for field in model_fields:
              field_name, field_type = field.split(':')
              if field_type == 'CharField':
                  setattr(Model, field_name, models.CharField(max_length=255))
              elif field_type == 'EmailField':
                  setattr(Model, field_name, models.EmailField())
              elif field_type == 'IntegerField':
                  setattr(Model, field_name, models.IntegerField())
              # Add more field types as needed
  
      # Save the model to the app's models.py file
      with open(os.path.join(app_name, 'models.py'), 'w') as f:
          f.write(f"from django.db import models\n\n")
          f.write(f"class {app_name.capitalize()}(models.Model):\n")
          for field in model_fields:
              field_name, field_type = field.split(':')
              f.write(f"    {field_name} = models.{field_type}()\n")
  
      # Perform migrations
      call_command('makemigrations', app_name)
      call_command('migrate')
  
      return f'Successfully created Django app "{app_name}" with model fields: {", ".join([field.split(":")[0] for field in model_fields])}'