code: def _read_tzfile_as_frame(tzdir, zone_name):
      transition_times_and_offsets = make_timezone_transition_table(
          tzdir, zone_name
      )
  
      if not transition_times_and_offsets:
          # this happens for UTC-like zones
          min_date = np.int64(np.iinfo("int64").min + 1).astype("M8[s]")
          transition_times_and_offsets = as_column(
              [min_date]
          ), as_column([np.timedelta64(0, "s")])
  
      return DataFrame._from_columns(
          transition_times_and_offsets, ["transition_times", "offsets"]
      )
  
imports: import os
  import zoneinfo
  from functools import lru_cache
  from typing import Tuple, cast
  import numpy
  import pandas
  import cudf
  from cudf._lib.labeling import label_bins
  from cudf._lib.search import search_sorted
  from cudf._lib.timezone import make_timezone_transition_table
  from cudf.core.column.column import as_column, build_column
  from cudf.core.column.datetime import DatetimeColumn, DatetimeTZColumn
  from cudf.core.dataframe import DataFrame
  from cudf.utils.dtypes import _get_base_dtype
label_desc: Use image node_id 4 for calling a global function with example usage: _read_tzfile_as_frame(tzdir, zone_name) and returns: DataFrame