code: def _process_open_file_options(
      open_file_options,
      metadata=None,
      columns=None,
      row_groups=None,
      default_engine=None,
      default_cache="readahead",
      allow_precache=True,
  ):
      # Process `open_file_options`.
      # Set default values and extract `precache_options`
      open_file_options = (open_file_options or {}).copy()
      precache_options = open_file_options.pop(
          "precache_options", {}
      ).copy()
      if not allow_precache:
          # Precaching not allowed
          # (probably because the file system is local)
          precache_options = {}
      if "open_file_func" not in open_file_options:
          if precache_options.get("method", None) == "parquet":
              open_file_options["cache_type"] = open_file_options.get(
                  "cache_type", "parts"
              )
              precache_options.update(
                  {
                      "metadata": metadata,
                      "columns": columns,
                      "row_groups": row_groups,
                      "engine": precache_options.get(
                          "engine", default_engine
                      ),
                  }
              )
          else:
              open_file_options["cache_type"] = open_file_options.get(
                  "cache_type", default_cache
              )
              open_file_options["mode"] = open_file_options.get(
                  "mode", "rb"
              )
      return precache_options, open_file_options
  
imports: from __future__ import annotations
  import re
  import warnings
  import numpy
  import pandas
  from fsspec.core import expand_paths_if_needed, get_fs_token_paths, stringify_path
  from fsspec.spec import AbstractFileSystem
  from dask import config
  from dask.dataframe.io.utils import _is_local_fs
  from dask.utils import natural_sort_key, parse_bytes
label_desc: Use image node_id 9 for calling a global function with example usage: _process_open_file_options(open_file_options, metadata, columns, row_groups, default_engine, default_cache, allow_precache) and returns: precache_options,  open_file_options