Dictionary Homework

[beepBoop123]

Hi, I keep getting an error that says "str' object has no attribute 'items" on line 3 and I don't understand why. Can someone help me fix the code? Thanks!

def get_inverted_index(words):
    tweetDict = {}
    wordCount = {}
    for tweetKey, tweetText in words.items():
        for word in tweetText.lower().split():
            wordCount[word]=wordCount.get(word,0)+1
            if inverted_index.get(word,False):
                if tweetKey not in tweetDict[word]:
                    tweetDict[word].append(tweetKey)
            else:
                tweetDict[word] = [tweetKey]
    return tweetDict, wordCount

gettysburg_address = "Four score and.."
print = (get_inverted_index(gettysburg_address))