code: def normalize(format):
      # Remove current endian specifier and white space from a format
      # string
      if format is None:
          return ""
      format = format.replace(OTHER_ENDIAN, THIS_ENDIAN)
      return re.sub(r"\s", "", format)
  
imports: import unittest
  from ctypes import *
  import re, sys
label_desc: Use image node_id 1 for calling a global function with example usage: normalize(format) and returns: re, str