code: def is_arabicstring(text):
      """Checks for an  Arabic standard Unicode block characters
      An arabic string can contain spaces, digits and pounctuation.
      but only arabic standard characters, not extended arabic
      @param text: input text
      @type text: unicode
      @return: True if all charaters are in Arabic block
      @rtype: Boolean
      """
      if re.search(
          "([^\u0600-\u0652%s%s%s\s\d])"
          % (LAM_ALEF, LAM_ALEF_HAMZA_ABOVE, LAM_ALEF_MADDA_ABOVE),
          text,
      ):
          return False
      return True
  
imports: import re
  from cltk.phonology.arb.utils.pyarabic import stack
label_desc: Use image node_id 24 for calling a global function with example usage: is_arabicstring(text) and returns: True, False