python-markdown does not render

[bodokaiser]

Hey,

I just followed the wiki guide to install some nbextensions:

1. clone the master branch of this repo and use setup.py
2. use jupyter nbextensions enable <name>
3. use following configuration in ~/.ipython/profile_default/ipython_config.py

c = get_config()

c.InteractiveShellApp.matplotlib = "inline"

c.NotebookApp.server_extensions = ['nbextensions']

c.Exporter.template_path = [os.path.join(jupyter_data_dir(), 'templates')]
c.Exporter.preprocessors = [
            "pre_codefolding.CodeFoldingPreprocessor",
                "pre_pymarkdown.PyMarkdownPreprocessor"
                ]

c.NbConvertApp.postprocessor_class = "post_embedhtml.EmbedPostProcessor"

The result is that for example the code folding extension works as should. Unfortunately I do not get the python markdown extension running (e.g. {{ expr }} stays unchanged). I also defined my notebook as trusted however nothing changes.

What could be the problem?

[juhasch]

I can't see from what you have written, if the extension is enabled.
Can you look at the Javascript console output in your browser if you see this line.
Loaded extension: usability/python-markdown/main ?

[bodokaiser]

Ah yes, I see there are 404s http://localhost:8888/nbextensions/usability/python-markdown.js.

How do I fix this?

[juhasch]

The easiest way is to install all extensions using python setup.py install, start the jupyter notebook and then go to http://localhost:8888/nbextensions where you should see this:

Now you can activate/deactivate all available extensions. Using jupyter nbextensions enable <name> leads to the difficulties you encountered, i.e. you specify an extension name that is not the name of the actual file.

[bodokaiser]

I found some errors in my config. Now I can see the interface at http://localhost:8888/nbextensions. I checked and found that python-markdown is enabled but still the chrome console gives a 404 on http://localhost:8888/nbextensions/usability/python-markdown.js. I checked the nbextensions folder and found that there only is a nbextensions/usability/python-markdown/main.js could this be a naming issue?

[juhasch]

Yes. Unfortunately an extension name can either be a subdirectory or the actual extension minus .js .
You need to manually disable the extension using jupyter disable python-markdown or clean up the json config file manually.

[bodokaiser]

I guess I will find the solution here: #282 Thank you for your help!

[kostrykin]

@bodokaiser So how did you actually solve this? To me it is not clear from the referenced issue.

[bodokaiser]

@kostrykin Sorry this has been too long ago. I guess api changed since 2015 too.

[jcb91]

@kostrykin, please open a new issue if you're having problems, it's probably best to keep a separate thread from this older one :)