code: def has_shadda(word):
      """Checks if the arabic word  contains shadda.
      @param word: arabic unicode char
      @type word: unicode
      @return: if shadda exists
      @rtype:Boolean
      """
      if re.search(SHADDA, word):
          return True
      return False
  
imports: import re
  from cltk.phonology.arb.utils.pyarabic import stack
label_desc: Use image node_id 21 for calling a global function with example usage: has_shadda(word) and returns: False, True