Jupyter Interval Widget

Jupyter Notebook Widget to continuously and asynchronously run code at specified time intervals.

No python threads, triggered by javascript setInterval
Stops when cell output is removed / widget is no longer rendered

Example

Display current datetime, update every 1000ms:

import ipywidgets as widgets
import datetime
from jupyter_interval_widget import Interval
from IPython.display import display, clear_output

output = widgets.Output()
def update_output(self):
    with output:
        clear_output(wait=True)
        display(str(datetime.datetime.now()))

interval = Interval(value=1000)
interval.on_tick(update_output)

widgets.HBox(children=(output, interval))

Installation

To install use pip:

$ pip install jupyter_interval_widget
$ jupyter nbextension enable --py --sys-prefix jupyter_interval_widget

For a development installation (requires npm),

$ git clone https://github.com/srizzo/jupyter-interval-widget.git
$ cd jupyter-interval-widget
$ pip install -e .
$ jupyter nbextension install --py --symlink --sys-prefix jupyter_interval_widget
$ jupyter nbextension enable --py --sys-prefix jupyter_interval_widget