Write a function, value_of_W(word), which returns the value of the word, consisting entirely of lowercase letters. The value of the word is the sum of the value of its letters. Use the function from Q2 has a helper function. Test run: for word in ['abe','mop','zap']: print('{0} has value {1}.'.format(word,value_of_W(word))) abe has value 0. mop has value 620. zap has value 903 My language is Python 3