属性错误：'int'对象没有属性'low'。

Question

我试图从flask UI中传递一条推文，并能够预测该推文的类型，如捐款、灾难等。

这是一个来自Jupyter笔记本的工作代码。

loaded_model = joblib.load('NB_spam_model.pkl')
result = loaded_model.score(X_test, y_test)
predict = loaded_model.predict([new_tweet])
print(result)
print(predict)

结果是

0.8409090909090909
['donations_and_help']

谁能帮我看看这段代码，纠正我哪里做错了？

app = Flask(__name__)

@app.route('/')
def index():
    return render_template("index.html" )

@app.route("/predict", methods=["GET","POST"])
def api():



if request.method == "POST":
        words = joblib.load('words.pkl')
        model = joblib.load('NB_spam_model.pkl')
        pstem = PorterStemmer()

        tweet = request.form["tweet"]
        text = tweet
        text = re.sub("[^a-zA-Z]", ' ', text)   
        text = text.lower()
        text = text.split()
        text = [pstem.stem(word) for word in text if not word in set(stopwords.words('english'))]
        text = ' '.join(text)
        print("This is the text %s:" + text)

        query = []
        for word in words:
            if word in text:
                query.append(1)
            else:
                query.append(0)

        print(query)
        #prediction = list(model.predict(np.matrix(query)))[0]
        pred = model.predict(query)[0]

        print(pred)

        if pred == 1:
            msg = "."
            return render_template("index.html", msg=msg, tweet=tweet)
        else:
            error = "Approximately 70%, your tweet Fake"
            return render_template("index.html", error=error, tweet=tweet)
    else:
        return redirect(url_for("index"))

if __name__ == '__main__':
    app.run(debug=False)

堆栈跟踪。

Project\lib\site-packages\sklearn\feature_extraction\text.py", 
   line 69, in _preprocess
   doc = doc.lower()
AttributeError: 'int' object has no attribute 'lower'
127.0.0.1 - - [03/Jun/2020 20:17:47] "?[35m?[1mPOST /predict HTTP/1.1?[0m" 500 -

Answer 1

正如你所看到的错误是AttributeError: 'int' object has no attribute 'lower' which means integer cannot be lower-cases. 在你的代码中的某个地方，它试图将整数对象小写，这是不可能的。print(text) 转换成低级别的前