[PYTHON] Mac application for double-clicking to open Jupyter Notebook (* .ipynb)

Overview

Create an application ** Jupyter Launcher.app ** to open Jupyter Notebook (\ * .ipynb) by double-clicking using Automator on Mac. Personally based on buq's original idea (double-click to open ipython notebook file @ OS X) Make some changes for the features you want to add to. I'm rewriting it in Python.

Additional features and changes

When the app itself is clicked and executed, the Jupyter tree screen is displayed.
Change Jupyter Notebook home from / to ~ / (for convenience and safety above)

Minor improvements

Wait until Jupyter starts up reliably (while statement part, especially immediately after starting Mac, because it may not be in time if it is a constant time wait)
Therefore, Jupyter startup confirmation uses lsof instead of netstat (because netstat keeps returning zero unless the browser is started).

Creation procedure

Start Automator.app, select ** New Application ** and start creating
Select ** Run Shell Script ** from Actions
Select ** / usr / bin / python ** as the shell
Select ** as an argument for the input delivery method
Enter the following Python script into the window
Save as Jupyter Launcher.app in / Applications
Set the icon as you like and complete

Python script

** 2017.01.14: ** Updated script (no functional changes)

`jupyter_launcher.py`


# coding: utf-8

"""Script for the Jupyter Launcher Application."""

import os
import sys
import time
import webbrowser
from subprocess import Popen, PIPE


def listened(port):
    """Check if the spacified port is listened or not."""
    cmd = "lsof -i :{} | grep 'LISTEN'"
    proc = Popen(cmd.format(port), stdin=PIPE, stdout=PIPE, stderr=PIPE, shell=True)
    return bool(proc.communicate()[0])


def launch_jupyter(port):
    """Launch a Jupyter Notebook Server with the spacified port."""
    cmd = "bash -cl 'jupyter-notebook ~/ --port={} --no-browser &' > /dev/null 2>&1"
    proc = Popen(cmd.format(port), stdin=PIPE, stdout=PIPE, stderr=PIPE, shell=True)
    proc.communicate()


if __name__ == '__main__':
    PORT = 8888
    ipynbs = sys.argv[1:]

    if not listened(PORT):
        launch_jupyter(PORT)

    while not listened(PORT):
        time.sleep(0.5)

    if ipynbs:
        for ipynb in ipynbs:
            url = 'http://localhost:{}/notebooks/{}'
            path = os.path.relpath(ipynb, os.environ['HOME'])
            webbrowser.open(url.format(PORT, path))
    else:
        url = 'http://localhost:{}/tree'
        webbrowser.open(url.format(PORT))

References