helgecph/cypher_kernel

An experimental Jupyter kernel for the Cypher query language.

cypher_kernel's Issues

Support for Jupyter Lab

Thank you for the wonderful kernel!

It works fine on Jupyter Notebook but not in Jupyter Lab. More specifically, the result doesn't show up after exécution.

Chicken and Egg Problem

Currently, the kernel wraps the cypher-shell. That is, when the kernel is getting started, a command similar to cypher-shell -u neo4j -p neo4j is executed. That will of course only succeed when a Neo4j instance is running. Otherwise, cypher-shell returns Connection refused and the kernel crashes. That is an issue in case one wants to start notebooks in which one wants to create a Neo4j container only for this notebook, such as in examples/paradise_papers.ipynb.

A possible solution could be to try to run cypher-shell -u neo4j -p neo4j and check if it can connect (or check if a neo4j process is running) and if not to start a small instance in a container and connect to that.

Which yaml module is required by cypher_kernel?

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/tmp/pip-install-vmumfhnr/cypher-kernel/setup.py", line 2, in <module>
    import cypher_kernel
  File "/tmp/pip-install-vmumfhnr/cypher-kernel/cypher_kernel/__init__.py", line 3, in <module>
    from .kernel import CypherKernel
  File "/tmp/pip-install-vmumfhnr/cypher-kernel/cypher_kernel/kernel.py", line 2, in <module>
    import yaml
ModuleNotFoundError: No module named 'yaml'
----------------------------------------

[Bug] cannot import name 'Node' from 'neo4j.data'

When I am trying to install from source, this is the error I'm facing:

Traceback (most recent call last):
#0 18.37   File "/usr/local/lib/python3.10/runpy.py", line 187, in _run_module_as_main
#0 18.37     mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
#0 18.37   File "/usr/local/lib/python3.10/runpy.py", line 110, in _get_module_details
#0 18.37     __import__(pkg_name)
#0 18.37   File "/app/src/utils/cypher_kernel/cypher_kernel/__init__.py", line 3, in <module>
#0 18.37     from .kernel import CypherKernel
#0 18.37   File "/app/src/utils/cypher_kernel/cypher_kernel/kernel.py", line 9, in <module>
#0 18.37     from neo4j.data import Node, Relationship
#0 18.37 ImportError: cannot import name 'Node' from 'neo4j.data' (/usr/local/lib/python3.10/site-packages/neo4j/data.py)
------

PS - I am trying to install this in a container. Below is the Dockerfile:

FROM python:3.10-alpine
LABEL author=pk13055, version=1.0

ENV PYTHONPATH=/usr/lib/python3.10/site-packages
RUN echo "@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
 && apk add --update --no-cache \
 			gcc libffi-dev musl-dev \ 
			glib-dev pango-dev racket@testing \
			py3-numpy@testing py3-pandas@testing \
			py3-scipy@testing py3-scikit-learn \
			py3-matplotlib@testing py3-seaborn@testing

COPY src/utils/cypher_kernel/ /app/src/utils/cypher_kernel/
WORKDIR /app/src/utils/cypher_kernel
RUN pip install . \
 && python -m cypher_kernel.install

WORKDIR /app
COPY requirements.* ./
RUN pip install -r requirements.in
COPY . .
ENTRYPOINT ["./entrypoint.sh"]