Python helper for a Terraform External provider

TfExternal.py

import json


class TfExternal(object):
    """Wrap Terraform External provider."""

    @staticmethod
    def query_args(obj):
        """Load json object from stdin."""
        return {} if obj.isatty() else json.load(obj)

    @staticmethod
    def out_json(result):
        """Print result to stdout."""
        print(json.dumps(result))