No template sub-directory with name 'lab' found in the following paths

问题

I am running a python azure function which is running a jupyter notebook via the nbconvert API. This was working for a time, although without deploying new code I have started to get the following error:

No template sub-directory with name 'lab' found in the following paths:\n\t/home/.local/share/jupyter\n\t/usr/local/share/jupyter\n\t/usr/share/jupyter

The code I am using to achieve this is:

from nbconvert.preprocessors import ExecutePreprocessor
from nbconvert import HTMLExporter

...

dl = DictLoader({'footer':
"""
{%- extends 'full.tpl' -%}

{% block input_group %}
    {%- if cell.metadata.get('nbconvert', {}).get('show_code', False) -%}
        ((( super() )))
    {%- endif -%}
{% endblock input_group %}
{% block output_group %}
    <style> .output_prompt{visibility:hidden;}</style>
    {{ super() }}
{% endblock output_group %}
"""})

...

html_exporter = HTMLExporter(extra_loaders=[dl], template_file='footer')
html_exporter.template_name = 'classic'
with open(JUPYTER_DIR + NOTEBOOK_NAME) as f:
    nb = nbformat.read(f, as_version=4)

ep = ExecutePreprocessor(timeout=600, kernel_name='python')
ep.preprocess(nb, {'metadata': {'path': JUPYTER_DIR}})
(body, resources) = html_exporter.from_notebook_node(nb)

The functionapp is running the following:

python3.6
nbconvert6.0.3
jupyter-lab0.1.1

I have tried googling the error, the closest thing I have found so far is this which is similar but unanswered and not completely the same. Thought I'd post here to see if anyone knows how to resolve or for me to update if I manage to resolve the issue.

I am quite confused as lab is not a keyword I am familiar with (outside of maybe jupyterlab) and isn't being used within the code.

As for the paths mentioned:

home/.local/share/jupyter/ exists and contains nbconvert/templates/html
usr/local/share/jupyter & usr/share/jupyter don't exist

Thanks in advance for any help!

回答1:

For me, uninstalling and installing nbconvert using:

pip uninstall nbconvert
pip install nbconvert

fixed this error.

回答2:

pip install -U nbconvert installs .../site-packages/share/jupyter/nbconvert/templates/
but jupyter nbconvert my.ipynb --to python doesn't look there --

# ValueError: No template sub-directory with name 'base' found in the following paths:

/Users/myuserid/Library/Jupyter  # mac
/Library/Frameworks/Python.framework/Versions/3.7/share/jupyter
/usr/local/share/jupyter
/usr/share/jupyter

Make a symbolic link in one of these to .../site-packages/.../templates, e.g.

cd $HOME/Library/Jupyter/nbconvert  # mac, other platforms dunno
mv templates templates-tmp  # empty
ln -s .../site-packages/share/jupyter/nbconvert/templates .
ls templates/
# asciidoc/  classic/      html/  latex/     python/  rst/
# base/    compatibility/  lab/   markdown/  reveal/  script/

回答3:

I'm getting the same exact error. I am assuming the default/built in templates were just installed during anaconda installation. I think we have to look at older versions of jupyter notebook / nbconvert / anaconda and just copy and paste the template files.

来源：https://stackoverflow.com/questions/63958574/no-template-sub-directory-with-name-lab-found-in-the-following-paths

标签

python

jupyter-notebook

azure-functions

jupyter

nbconvert