code: def _zstd_open(
      filename: str,
      mode: Mode = "r",
      *,
      level_or_option: int | dict | None = None,
      zstd_dict: pyzstd.ZstdDict | None = None,
  ) -> pyzstd.ZstdFile:
      return pyzstd.ZstdFile(
          filename,
          mode,
          level_or_option=level_or_option,
          zstd_dict=zstd_dict,
      )
  
imports: from __future__ import annotations
  import gzip
  import io
  import typing
  from bz2 import BZ2File
  from os.path import splitext
  from ._compression import HAVE_INDEXED_GZIP, IndexedGzipFile, pyzstd
label_desc: Use image node_id 2 for calling a global function with example usage: _zstd_open(filename, mode) and returns: pyzstd