#Đếm số nguyên âm, số phụ âm trong 1 string. s = 'asfasfhBAS734@o&*#' vowels = 'ueoai' consonants = 'qwrtypsdfghjklzxcvbnm' s = s.lower() a = 0 # a: The number of vowels b = 0 # b: The number of consonants for w in s: if w in vowels: a += 1 elif w in consonants: b += 1 print('The number of vowels = {0}\nThe number of consonants = {1}'.format(a,b))