Python 代码：按首字母排序英文单词

words = input('请输入若干个首字母无序的英文单词，以空格分隔：').split() words_dict = {} for word in words: first_letter = word[0] if first_letter in words_dict: words_dict[first_letter].append(word) else: words_dict[first_letter] = [word] sorted_dict = sorted(words_dict.items()) for key, value in sorted_dict: print(key + ':') for word in sorted(value): print(' ' + word)