import os
import json

def load_json(path):
    with open(path, 'r') as f:
        return json.load(f)

def save_json(obj, path):
    with open(path, 'w') as f:
        json.dump(obj, f, indent=2)

def list_json_files(folder):
    return [f for f in os.listdir(folder) if f.endswith('.json')]