Question

问题：我在MacOs 10.9中使用pip3安装了python3和jupyter笔记本当我尝试运行小部件时，它给出了没有javascript小部件的错误。我在Jupyter-notebook中安装了python3和R内核。

代码：

from ipywidgets import widgets
from IPython.display import display
text = widgets.Text()
display(text)
text.on_submit('hello')

错误：

Widget Javascript not detected.  It may not be installed or enabled properly.

尝试：

sudo -H pip3 install ipywidgets  
sudo -H pip3 install -upgrade ipywidgets  
jupyter nbextension enable --py widgetsnbextension
# restarted the computer.

最后一个命令出错。

[EnableNBExtensionApp] CRITICAL | Bad config encountered during initialization:
[EnableNBExtensionApp] CRITICAL | Unrecognized flag: '--py'

请注意，在mac中我有jupyter-nbextension命令但命令：

jupyter-nbextension enable --py widgetsnbextension

也不起作用。

但是jupyter nbextension enable widgetsnbextension没有错误，也没有做任何事情。如果我运行代码，则会弹出相同的错误。

此外，

import ipywidgets
ipywidgets.__version__

给出'6.0.0'。

一些注意事项：

which jupyter  
jupyter is /Library/Frameworks/Python.framework/Versions/3.5/bin/jupyter
which jupyter-notebook
jupyter-notebook is /Library/Frameworks/Python.framework/Versions/3.5/bin/jupyter-notebook

相关链接：

https://github.com/jupyter-widgets/ipywidgets/issues/541    
https://github.com/jupyter/help/issues/32    
https://github.com/jupyter/help/issues/131    
https://github.com/binder-project/binder/issues/83

如何安装小部件？
我需要单独安装java吗？

Answer 1

运行以下命令： jupyter nbextension enable --py --sys-prefix widgetsnbextension，然后在Jupyter中重新启动内核就可以了。

Answer 2

我在Jupyter，Mac OS，Python 3.6和Anaconda中成功使用了以下命令。第一个命令此时获取最新版本的ipywidgets（版本7.0）。

server {
    listen 443;
    server_name www.somesite.ai;

    #The internal IP of the VM that hosts your Apache config

    location /{    
        if ($request_uri ~ ^/(\d+)/([^/]+)) {
            proxy_pass   http://192.168.X.XXX:$1/$2/;       
        }    

        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host:$server_port;
        proxy_buffering off;           
    }

    location ~ ^/(\d+)/static/ {
        try_files $uri  /bokehstatic/static/;      
    }
}

Answer 3

这解决了我：

jupyter labextension install @jupyter-widgets/jupyterlab-manager

Answer 4

我遇到了同样的问题，在运行命令jupyter nbextension enable --py --sys-prefix widgetsnbextension后，出现提示：

>Enabling notebook extension jupyter-js-widgets/extension...

- Validating: ok。刷新你的jupyter笔记本，小部件工作。

Answer 5

可能是最好的方式，至少它对我有用：重新安装ipywidgets和widgetsextension它应该可以工作。

DECLARE @From DECIMAL (15,2) = 19.99;
DECLARE @To DECIMAL (15,2) = 20.02;
DECLARE @Step DECIMAL (15,2) = 00.01;
DECLARE @R TABLE (Value DECIMAL(15,2));

WHILE @From <= @To
    begin
        INSERT INTO @R VALUES (@From);
        SET @From = @From + @Step;
    End
SELECT *
FROM @R;

Jupyter笔记本：Widget未检测到Javascript

5 个答案: