在python中，如何创建文本文件中列出的所有唯一单词的词典。到目前为止，我有这个代码。谢谢

Question

def getUniqueWords(wordsList) :
    """
    Returns the subset of unique words containing all of the words that are presented in the
    text file and will only contain each word once. This function is case sensitive
    """
    uniqueWords = {}
    for word in speech :
        if word not in speech:
            uniqueWords[word] = []
    uniqueWords[word].append(word)    
        

Answer 1

text = 'a, a, b, b, b, a'

u = set(text.split(', '))

# u={'a', 'b'}