"""
Copyright (c) Jupyter Development Team.
Distributed under the terms of the Modified BSD License.
"""

import os
from jinja2 import FileSystemLoader
from notebook.base.handlers import IPythonHandler, FileFindHandler
from notebook.notebookapp import NotebookApp
from traitlets import Unicode


class ExampleHandler(IPythonHandler):
    """Handle requests between the main app page and notebook server."""

    def get(self):
        """Get the main page for the application's interface."""
        return self.write(self.render_template("index.html",
            static=self.static_url, base_url=self.base_url))

    def get_template(self, name):
        loader = FileSystemLoader(os.getcwd())
        return loader.load(self.settings['jinja2_env'], name)


class ExampleApp(NotebookApp):

    default_url = Unicode('/example')

    def init_webapp(self):
        """initialize tornado webapp and httpserver.
        """
        super(ExampleApp, self).init_webapp()
        default_handlers = [
            (r'/example/?', ExampleHandler),
            (r"/example/(.*)", FileFindHandler,
                {'path': 'build'}),
        ]
        self.web_app.add_handlers(".*$", default_handlers)


if __name__ == '__main__':
    ExampleApp.launch_instance()

"""
Copyright (c) Jupyter Development Team.
Distributed under the terms of the Modified BSD License.
"""

import os
from jinja2 import FileSystemLoader
from notebook.base.handlers import IPythonHandler, FileFindHandler
from notebook.notebookapp import NotebookApp
from traitlets import Unicode


class ExampleHandler(IPythonHandler):
    """Handle requests between the main app page and notebook server."""

    def get(self):
        """Get the main page for the application's interface."""
        return self.write(self.render_template("index.html",
            static=self.static_url, base_url=self.base_url,
            terminals_available=True))

    def get_template(self, name):
        loader = FileSystemLoader(os.getcwd())
        return loader.load(self.settings['jinja2_env'], name)


class ExampleApp(NotebookApp):

    default_url = Unicode('/example')

    def init_webapp(self):
        """initialize tornado webapp and httpserver.
        """
        super(ExampleApp, self).init_webapp()
        default_handlers = [
            (r'/example/?', ExampleHandler),
            (r"/example/(.*)", FileFindHandler,
                {'path': 'build'}),
        ]
        self.web_app.add_handlers(".*$", default_handlers)


if __name__ == '__main__':
    ExampleApp.launch_instance()

Enable terminals in the lab example