code: def unpack_single_str_list(keys):
      # GH 42795
      if isinstance(keys, list) and len(keys) == 1:
          keys = keys[0]
      return keys
  
file_path: catboost/contrib/python/pandas/py3/pandas/plotting/_matplotlib/misc.py
imports: from __future__ import annotations
  import random
  from typing import TYPE_CHECKING, Hashable
  from matplotlib import patches
  import matplotlib.lines
  import numpy
  from pandas.core.dtypes.missing import notna
  from pandas.io.formats.printing import pprint_thing
  from pandas.plotting._matplotlib.style import get_standard_colors
  from pandas.plotting._matplotlib.tools import create_subplots, do_adjust_figure, maybe_adjust_figure, set_ticks_props
label_desc: Use image node_id 9 for calling a global function with example usage: unpack_single_str_list(keys) and returns: keys