tfidf = TfidfVectorizer()
data['content'] = data['content'].fillna('')
tfidf_matrix = tfidf.fit_transform(data['content'])

{'square': 3754,
 '01': 0,
 '02': 1,
 'public_square': 3137,
 '04': 3,
 '05': 4,
 '06': 5,
 '07': 6,
 '08': 7,
 '03': 2,
 'feather': 1666,
 'straight': 3821,...