Help Installing jupyter extensions on Windows 7 machine

[pybokeh]

Hello,

I'm having a difficult time installing notebook extensions in jupyter on my Windows 7 machine.  I am following along per the docs at https://github.com/ipython-contrib/IPython-notebook-extensions/wiki/Home_Jupyter

I've set 2 environment variables:

set JUPYTER_CONFIG_DIR=d:\.profiles

set JUPYTER_PATH=d:\.profiles\nbextensions

######  config path #########

print(jupyter_config_dir()) results in:

d:\.profiles

print(jupyter_config_path()) results in:

['d:\\.profiles', 'D:\\Miniconda3\\envs\\data_analysis\\etc\\jupyter', 'D:\\ProgramData\\jupyter']

##### data path ########

print(jupyter_data_dir()) results in:

C:\Users\pybokeh\AppData\Roaming\jupyter

print(jupyter_path()) results in:

['d:\\.profiles\\nbextensions', 'C:\\Users\\pybokeh\\AppData\\Roaming\\jupyter', 'D:\\Miniconda3\\envs\\data_analysis\\share\\jupyter', 'D:\\ProgramData\\jupyter']

Per the docs, to ensure my extensions were installed correctly in the correct location, I executed these commands which resulted in "True":

import notebook

notebook.nbextensions.check_nbextension('usability/codefolding', user=True)
notebook.nbextensions.check_nbextension('usability/codefolding/main.js', user=True)

Then I enable the extension via:

E = notebook.nbextensions.EnableNBExtensionApp()
E.enable_nbextension('usability/codefolding/main')

As a check, I opened up the notebook.json file located at D:\.profiles\nbconfig and the contents of which are:

{
  "load_extensions": {
    "usability/codefolding/main": true
  }
}

Then I launch the notebook, but the extension is not loaded/working and I get no error messages in the terminal that I launched the jupyter notebook server from and I don't see any error messages in Firefox's developer javascript debugger tool (but I am not too familiar with javascript or web development in general) so I could be wrong about no javascript errors.  I can visit the url  http://127.0.0.1:8888/jupyter/nbextensions/usability/codefolding/main.js and see the js file.

I was told of this github issue https://github.com/jupyter/notebook/issues/250   but not sure if it applies to Windows also.  My notebook version is 4.0.1

I also tried to install the extension using the "jupyter nbextension install" command:

jupyter nbextension install usability/codefolding/main

then get the following error messages:

> copying usability/codefolding/main -> D:\ProgramData\jupyter\nbextensions\main
Traceback (most recent call last):
  File "D:\Miniconda3\envs\data_analysis\Scripts\jupyter-nbextension-script.py", line 5, in <module>
    main()
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\jupyter_core\application.py", line 267, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\traitlets\config\application.py", line 592, in launch_instance
    app.start()
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\notebook\nbextensions.py", line 401, in start
    super(NBExtensionApp, self).start()
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\jupyter_core\application.py", line 256, in start
    self.subapp.start()
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\notebook\nbextensions.py", line 317, in start
    self.install_extensions()
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\notebook\nbextensions.py", line 305, in install_extensions
    nbextensions_dir=self.nbextensions_dir,
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\notebook\nbextensions.py", line 216, in install_nbextension
    _maybe_copy(src, full_dest, verbose)
  File "D:\Miniconda3\envs\data_analysis\lib\site-packages\notebook\nbextensions.py", line 53, in _maybe_copy
    shutil.copy2(src, dest)
  File "D:\Miniconda3\envs\data_analysis\lib\shutil.py", line 245, in copy2
    copyfile(src, dst, follow_symlinks=follow_symlinks)
  File "D:\Miniconda3\envs\data_analysis\lib\shutil.py", line 108, in copyfile
    with open(src, 'rb') as fsrc:
FileNotFoundError: [Errno 2] No such file or directory: 'usability/codefolding/main'

What's interesting is the first line of the error message.  It is trying to copy from D:\ProgramData\jupyter\nbextensions\main, but I have set my JUPYTER_PATH to D:\.profile\nbextensions   So it appears to ignore that environment variable that I have set.  What's also interesting is that it omitted the 'usability/codefolding' directory.

My notebook version is 4.0.1  Perhaps, I should wait for version 4.1 to install extensions?

Thanks.

- Daniel

[Jonathan Frederic]

Because you see the file at http://127.0.0.1:8888/jupyter/nbextensions/usability/codefolding/main.js , the extension is installed. However, either the extension itself is broken or the mechanism that runs the Javascript is not running the Javascript. Try this:

- Open a notebook, 

- hit Ctrl-Shift-i to open dev tools, 

- click one the console tab,

- type this in `IPython.utils.load_extension('usability/codefolding/main');` (without the backticks)

If you don't see any errors and the extension works, it's a problem with the notebook frontend config.  If you don't see any errors and the extension doesn't work, then that's a pretty good indicator it's a problem with the extension.  Otherwise, please report back with the error, so we can help.

Cheers,

Jon

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[pybokeh]

Thanks.  After executing the following:  IPython.utils.load_extension('usability/codefolding/main');

It returned:

Uncaught ReferenceError: IPython is not defined

    at <anonymous>:2:1

    at Object.InjectedScript._evaluateOn (<anonymous>:904:140)

    at Object.InjectedScript._evaluateAndWrap (<anonymous>:837:34)

    at Object.InjectedScript.evaluate (<anonymous>:693:21)(anonymous function) @ VM61:2InjectedScript._evaluateOn @ VM60:904InjectedScript._evaluateAndWrap @ VM60:837InjectedScript.evaluate @ VM60:693