flake8-nb

flake8 checking for jupyter notebooks.

This tool is mainly aimed towards writing tutorials/lecture material, where one might also want to show off bad practices and/or errors, while still keeping the rest of the code clean and without adding the complexity of tooling to the readers (see docs on cell tags).

Basically this is a hack on the flake8's Application class, which adds parsing and a cell based formatter for *.ipynb files.

This is NOT A PLUGIN but a stand alone CLI tool/pre-commit hook to be used instead of the flake8 command/hook.

Features

flake8 CLI tests for jupyter notebooks
Full base functionality of flake8 and its plugins
Input cell based error formatting (Execution count/code cell count/total cellcount)
Report fine tuning with cell-tags (flake8-noqa-tags see usage)
pre-commit hook

Examples

Default reporting

If you had a notebook with name example_notebook.ipynb, where the code cell which was executed as 34th cell (In[34]) had the following code:

bad_formatted_dict = {"missing":"space"}

running flake8_nb would result in the following output.

Execution count

$ flake8_nb example_notebook.ipynb
example_notebook.ipynb#In[34]:1:31: E231 missing whitespace after ':'

Custom reporting

If you prefer the reports to show the cell number rather then the execution count you can use the --notebook-cell-format option, given that the cell is the 5th code cell and 10th total cell (taking raw and markdown cells into account), you will get the following output.

Code cell count

$ flake8_nb --notebook-cell-format '{nb_path}:code_cell#{code_cell_count}' example_notebook.ipynb
example_notebook.ipynb:code_cell#5:1:31: E231 missing whitespace after ':'

Total cell count

$ flake8_nb --notebook-cell-format '{nb_path}:cell#{total_cell_count}' example_notebook.ipynb
example_notebook.ipynb:cell#10:1:31: E231 missing whitespace after ':'

Similar projects

nbQA: Run isort, pyupgrade, mypy, pylint, flake8, mdformat, black, blacken-docs, and more on Jupyter Notebooks

Contributors ✨

Thanks goes to these wonderful people (emoji key):

_{Sebastian Weigand} 💻 🤔 🚧 📆 🚇 ⚠️ 📖	_{Jt Miclat} 🐛	_{Philipp Eisenhauer} 🐛	_{Shoma Okamoto} ⚠️	_{Marco Gorelli} 🔧 📖	_{Tony Hirst} 🤔	_Dobatymo 🐛
_{Alp Arıbal} 🐛	_1kastner 🐛	_{Dominique Sydow} 🐛	_{Liam Keegan} 🐛 💻

This project follows the all-contributors specification. Contributions of any kind welcome!

Metadata

Release files for flake8-nb 0.5.3

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Source distribution for flake8-nb 0.5.3
File	Size	Uploaded	Provenance
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Table of built distributions (wheels) for flake8-nb 0.5.3
File	Interpreter	ABI	Platform	Reset
flake8_nb-0.5.3-py3-none-any.whl 23.7 kB Mar 28, 2023 Without provenance	Python 3	none	any	Details

Total release size: 61.5 kB

Release files / flake8_nb-0.5.3.tar.gz

Download URL	flake8_nb-0.5.3.tar.gz
Size	37.8 kB
Tags	Source
SHA-256 checksum How to use checksums	`00b447f4a4d649f85e35aad437d3df1477115dce081bc364f09d718cf928ca75`
BLAKE2b-256 checksum How to use checksums	`b1e8660afa7a10f8211145d82a9b74affd9407b1c9f06459bfe92320f7ada850`
Upload date	Mar 28, 2023
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Uploaded via	`twine/4.0.1 CPython/3.11.2`

Release files / flake8_nb-0.5.3-py3-none-any.whl

Download URL	flake8_nb-0.5.3-py3-none-any.whl
Size	23.7 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`09f6287a3dd3147c2abe8ed9d807042b414befa4755a935a124b5a3674044952`
BLAKE2b-256 checksum How to use checksums	`1ecbf27f39623e441c74148175068abb3ec9b766afe4254177adeed8be297f53`
Upload date	Mar 28, 2023
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/4.0.1 CPython/3.11.2`

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