This script retrieves the sites and apps information from a bench.
Use [-j, --json] option to output a dict in cli :

{
    "sites": {
        site_name: {
            "scheduler": bool,
            "maintenance": bool,
            "url": "http://site_name"
        }
    },
    "apps": {
        app_name: {
            "app_version": version
        }
    }
}

Command example :

/path/to/bench/env/bin/python erpnext_info.py -j /path/to/bench