Count the words in a corpus and return a TfidfVectorizer() as well as all the TFIDF vecgtors for the corpus

    Args:
      docs (iterable of strs): a sequence of documents (strings)

    Returns:
      (TfidfVectorizer, tfidf_vectors)

def tfidf_corpus(docs=CORPUS):
    """ Count the words in a corpus and return a TfidfVectorizer() as well as all the TFIDF vecgtors for the corpus

    Args:
      docs (iterable of strs): a sequence of documents (strings)

    Returns:
      (TfidfVectorizer, tfidf_vectors)
    """
    vectorizer = TfidfVectorizer()
    vectorizer = vectorizer.fit(docs)
    return vectorizer, vectorizer.transform(docs)