Function _modify_data

dvc/utils/serialize/_common.py:82–91

(
    path: "StrPath",
    parser: ParserFn,
    dumper: DumpersFn,
    fs: Optional["FileSystem"] = None,
)

@contextmanager
def _modify_data(
    path: "StrPath",
    parser: ParserFn,
    dumper: DumpersFn,
    fs: Optional["FileSystem"] = None,
):
    file_exists = fs.exists(os.fspath(path)) if fs else os.path.exists(path)
    data = _load_data(path, parser=parser, fs=fs) if file_exists else {}
    yield data
    _dump_data(path, data, dumper=dumper, fs=fs)