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Missing template in flask_embed.py and tornado_embed.py

See original GitHub issue

The flask_embed.py and tornado_embed.py examples are not self-contained in that they need an embed.html template. Running flask_embed.py as it appears in the repository leads to the following error:

$ python flask_embed.py 
Opening Flask app with embedded Bokeh application on http://localhost:8080/
[2017-01-16 21:29:37,150] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "flask_embed.py", line 43, in bkapp_page
    return render_template("embed.html", script=script)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/templating.py", line 133, in render_template
    return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list),
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/environment.py", line 851, in get_or_select_template
    return self.get_template(template_name_or_list, parent, globals)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/environment.py", line 812, in get_template
    return self._load_template(name, self.make_globals(globals))
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/environment.py", line 774, in _load_template
    cache_key = self.loader.get_source(self, name)[1]
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/templating.py", line 57, in get_source
    return self._get_source_fast(environment, template)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/templating.py", line 85, in _get_source_fast
    raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: embed.html

And putting examples/embed/simple/templates/embed.html under templates/ yields this:

$ python flask_embed.py   
Opening Flask app with embedded Bokeh application on http://localhost:8080/
[2017-01-16 21:30:38,094] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "flask_embed.py", line 43, in bkapp_page
    return render_template("embed.html", script=script)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/templating.py", line 134, in render_template
    context, ctx.app)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/flask/templating.py", line 116, in _render
    rv = template.render(context)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/environment.py", line 989, in render
    return self.environment.handle_exception(exc_info, True)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/tmp/templates/embed.html", line 9, in top-level template code
    {{ js_resources|indent(4)|safe }}
  File "/home/juanlu/.miniconda3/envs/py35/lib/python3.5/site-packages/jinja2/filters.py", line 453, in do_indent
    rv = (u'\n' + indention).join(s.splitlines())
jinja2.exceptions.UndefinedError: 'js_resources' is undefined