code: def _import_nibabel(why="use MRI files"):
      try:
          import nibabel as nib
      except ImportError as exp:
          raise exp.__class__(
              "nibabel is required to %s, got:\n%s" % (why, exp)
          ) from None
      return nib
  
imports: import numbers
  import operator
  import os
  import re
  from builtins import input
  from difflib import get_close_matches
  from importlib import import_module
  from pathlib import Path
  import numpy
  from ..defaults import HEAD_SIZE_DEFAULT, _handle_default
  from ..fixes import _compare_version, _median_complex
  from ._logging import _record_warnings, _verbose_safe_false, logger, verbose, warn
label_desc: Use image node_id 52 for calling a global function with example usage: _import_nibabel(why) and returns: nib