jupyterlab 按钮事件不起作用

Question

此代码在 jupyter notebook 中有效，但在 jupyterlab 中无效：

import ipywidgets as widgets
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)

有人有解决办法吗？

环境：

MacOsX 10 10.12.2
Python 2.7.14 :: Anaconda, Inc.
Jupyter 笔记本 5.4.0
Jupyter 实验室 0.31.5

Answer 1

当前，仍然是问题...但是here我找到了解决方案。

import ipywidgets as widgets
button = widgets.Button(description='Display Chart')
out = widgets.Output()
def on_button_clicked(b):
    button.description = 'clicked'
    with out:
        print('Ay')

button.on_click(on_button_clicked)
widgets.VBox([button, out])

jupyterlab 按钮事件不起作用

jupyterlab button event not working

events

jupyter-notebook

jupyter-lab