blender_jupyter.py

import time
import sys
sys.path.append('/Users/tjw/anaconda3/envs/py35/lib/python3.5/site-packages')

from ipykernel.kernelapp import IPKernelApp
from tornado import ioloop
from bpy.app.handlers import persistent, scene_update_pre


class StepIPKernelApp(IPKernelApp):
    def prep_start(self):
        if self.subapp is not None:
            return self.subapp.start()
        if self.poller is not None:
            self.poller.start()
        self.kernel.start()
        self.io_loop = ioloop.IOLoop.current()

    def step(self):
        try:
            self.io_loop.add_callback(
                lambda: self.io_loop.add_callback(self.io_loop.stop))
            self.io_loop.start()
        except KeyboardInterrupt:
            pass


sys.argv = ['blender_kernel', '-f', sys.argv[-1]]
stderr = sys.stderr
app = None
running = False
@persistent
def ipykernel_timer(_):
    global app
    global running
    if running:
        return
    running = True
    if app is None:
        app = StepIPKernelApp.instance()
        app.initialize()
        app.prep_start()
    app.step()
    running = False


scene_update_pre.append(ipykernel_timer)