Question

jupyter widgets exension不呈现ui项目。尝试更新客户端并启用widgetsnbextension但代码如下：

!pip install --upgrade jupyter_core jupyter_client
!jupyter nbextension enable --py widgetsnbextension

from IPython.display import display
button = widgets.Button(description="Click Me!")
display(button)

def on_button_clicked(b):
    print("Button clicked.")

button.on_click(on_button_clicked)

呈现：

Requirement already up-to-date: jupyter_core in /usr/local/lib/python2.7/dist-packages
Requirement already up-to-date: jupyter_client in /usr/local/lib/python2.7/dist-packages
Requirement already up-to-date: traitlets in /usr/local/lib/python2.7/dist-packages (from jupyter_core)
Requirement already up-to-date: python-dateutil>=2.1 in /usr/local/lib/python2.7/dist-packages (from jupyter_client)
Requirement already up-to-date: pyzmq>=13 in /usr/local/lib/python2.7/dist-packages (from jupyter_client)
Requirement already up-to-date: tornado>=4.1 in /usr/local/lib/python2.7/dist-packages (from jupyter_client)
Requirement already up-to-date: enum34; python_version == "2.7" in /usr/local/lib/python2.7/dist-packages (from traitlets->jupyter_core)
Requirement already up-to-date: six in /usr/local/lib/python2.7/dist-packages (from traitlets->jupyter_core)
Requirement already up-to-date: decorator in /usr/local/lib/python2.7/dist-packages (from traitlets->jupyter_core)
Requirement already up-to-date: ipython-genutils in /usr/local/lib/python2.7/dist-packages (from traitlets->jupyter_core)
Requirement already up-to-date: singledispatch in /usr/local/lib/python2.7/dist-packages (from tornado>=4.1->jupyter_client)
Requirement already up-to-date: futures in /usr/local/lib/python2.7/dist-packages (from tornado>=4.1->jupyter_client)
Requirement already up-to-date: backports-abc>=0.4 in /usr/local/lib/python2.7/dist-packages (from tornado>=4.1->jupyter_client)
Enabling notebook extension jupyter-js-widgets/extension...
      - Validating: OK
Button(description='Click Me!', style=ButtonStyle())

案文：

Button(description='Click Me!', style=ButtonStyle())

呈现

而不是UI按钮

是否需要另一个图书馆？

Answer 1

来自http://ipywidgets.readthedocs.io/en/latest/user_install.html：

问题：当我显示小部件或进行交互时，我只看到一些文字，   例如IntSlider（value = 0）或interactive（children =（IntSlider（value = 0，   description ='x'，max = 1），Output（）），   _dom_classes =（ '插件-相互作用'，））。有什么问题？

答案：如果小部件打印小部件的文本表示   控制不可用。这可能意味着小部件JavaScript仍然存在   加载。如果消息仍存在于Jupyter笔记本中或   JupyterLab，它可能意味着小部件JavaScript库是   要么未安装，要么未启用。请参阅安装说明   以上是设置说明。

页面刷新修复了我的问题。我认为我的问题中提到的安装仍然是必需的。

Answer 2

就我而言，我不得不再次运行jupyter笔记本中的单元格。在小部件标签中，选择 Save Notebook Widgets State （保存笔记本小部件状态）可以在每次再次打开笔记本时呈现小部件，而不必重新运行它。

启用jupyter小部件

2 个答案: