ValueError: too many values to unpack (expected 2) in templates/results.html:13: ValueError

Question

我正在处理文本分类 NLP 问题。我已经训练了模型并使用训练有素的模型进行分类。预测数据是需要进行预测的有序字典。

预测输出：

OrderedDict([('Subject: fwd : next tuesday at ', 'SPAM'), ('Subject: visit may 4 th  vince ', 'SPAM'), ('Subject: enjoy media ( ejym ) e', 'SPAM')])

我将其保存为 json 文件，然后将其加载到显示函数中以使用 render_template

进行渲染

with open('labels.json', 'w') as fp:
 json.dump(result,fp)
f = open('labels.json')
predict = json.load(f)
return render_template("result.html",predictions=predict)

模板未使用 json 值呈现：错误 -

ValueError: too many values to unpack (expected 2)  in templates

测试用例失败：

    {% for email, result in predictions %}
    E   ValueError: too many values to unpack (expected 2)
    code/templates/results.html:13: ValueError

labels.json

{"Subject: fwd : next tuesday at ": "SPAM", "Subject: visit may 4 th  vince ": "SPAM", "Subject: enjoy media ( ejym ) e": "SPAM"}

Answer 1

您需要在字典上调用 .items() 来创建 (email, result):

的元组列表

{% for email, result in predictions.items() %}

编辑：既然你提到模板文件是固定的，你也可以改变模板变量并在那里应用.items()：

return render_template("result.html",predictions=predict.items())

ValueError: too many values to unpack (expected 2) in templates/results.html:13: ValueError

ValueError: too many values to unpack (expected 2) in templates/results.html:13: ValueError

python

flask