fabfile.py

from fabric.api import *

def get_app_data(project_path=None, app=None):
    if not project_path:
        project_path = prompt("Where do we find your project?")
    
    if not app:
        app = prompt("What app do you want data from?")
    with cd(project_path):
        run('python manage.py dumpdata %s --format=json --indent=4 > %s.json' % (app, app))
        get('~/%s/%s.json' % (project_path, app), '%s.json' % app)