创建一个接受单词列表的 function，并返回句子中的一组单词

Question

1. need to create a function that takes a string

eg "hello it is a nice day today and it is hot"

2. the function needs to use the LIST of words in the string, and create a SET consisting of the words in the string.

the output should be: ("hello" "it" "is" "a" "nice" "day" "today" "and" "hot") NOTE: the set only has unique words from the sentence, no repeating words

I tried it myself but it says its wrong:

opening_line="It was the best of times, it was the worst of times"

def get_vocabulary(word_list):

  words = word_list.split()

  dickens_words = set()
  dickens_words.add(words)

  return words

print(get_vocabulary(opening_line))

Answer 1

You're adding the entire list as a single element to the set. Instead, you could construct a set from list, which would add all the words individually to the set:

def get_vocabulary(word_list):
    return set(word_list.split())

Answer 2

The problem is add() accept only one element.

Try adding the link when you create the set

dickens_words = set(words)

Answer 3

A = list(input("statement:").strip().split(' '))

print (' '.join(list(dict.fromkeys(A))))