api_tag_route.py

@app.route("/tag", methods=['GET', 'POST'])
def tag():
    content = request.get_json(silent=True)
    if len(content) > 50:
        return abort(400)
    tokens = map(nltk.word_tokenize, content)
    tagged_tokens = map(nltk.pos_tag, tokens)
    for_feature = pre_feature(tagged_tokens)
    with_feature = map(feature_extractor, for_feature)
    flattened_with_feature = [item for sublist in with_feature for item in sublist]
    xseq = to_crfsuite(flattened_with_feature)
    yseq = tagger.tag(xseq)
    tags = []
    for y in yseq:
        tags.append(y)
    tags = list(reversed(tags))
    result = []
    for feature in with_feature:
        tagged_token = []
        for token in feature:
            tagged_token.append({"token": token['w'], "tag": tags.pop()})
        result.append(tagged_token)
    return jsonify(tagged_tokens=result)