3 examples of 'most frequent word in an array of strings' in Python

37
def topKFrequent(self, words: List[str], k: int) -> List[str]:
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    counts = collections.Counter(words)
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    h = []
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    heapq.heapify(h)
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    for word, count in counts.items():
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        heapq.heappush(h, Element(word, count))
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        if len(h) > k:
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            heapq.heappop(h)
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    ans = []
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    while h:
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        ans.append(heapq.heappop(h).word)
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    return ans[::-1]

43
def topKFrequent1(self, words, k):
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    # beats 77.28%
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    d = {}
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    for word in words:
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        d[word] = d.get(word, 0) + 1
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    ret = sorted(d, key=lambda word: (-d[word], word))
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51
    return ret[:k]

6
def get_word_frequencies(text, words_n=10, lang='german'):
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    default_stopwords = set(nltk.corpus.stopwords.words(lang))
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    words = nltk.tokenize.word_tokenize(text)
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    words = [word for word in words if len(word) > 1]
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    words = [word for word in words if not word.isnumeric()]
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    words = [word.lower() for word in words]
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    words = [word for word in words if word not in default_stopwords]
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    fdist = nltk.FreqDist(words)
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    return fdist.most_common(words_n)