def save_json(obj, f, ensure_ascii=True, indent=None):
    with open(f, 'w') as fp:
        json.dump(obj, fp, ensure_ascii=ensure_ascii, indent=indent)
def save_json(obj, f, ensure_ascii=True, indent=None):
    with open(f, 'w') as fp:
        json.dump(obj, fp, ensure_ascii=ensure_ascii, indent=indent)