code: def count_skip_axes(layout):
      if layout.startswith("FC") or layout.startswith("CF"):
          return 2
      if layout.startswith("F") or layout.startswith("C"):
          return 1
      return 0
  
imports: from nvidia.dali.pipeline import pipeline_def
  import nvidia.dali.types
  import nvidia.dali.fn
  import numpy
  import cv2
  from scipy.ndimage import convolve1d, filters
  import os
  from nose_utils import assert_raises
  from nose.plugins.attrib import attr
  from sequences_test_utils import video_suite_helper, ArgCb
  from test_utils import get_dali_extra_path, check_batch, RandomlyShapedDataIterator
label_desc: Use image node_id 18 for calling a global function with example usage: count_skip_axes(layout) and returns: int, int, int