How to use Pylint or other linters with Jupyter Notebooks?

• Yes it is possible
• You can install pycodestyle for Jupyter Notebook which is similar to pylint. You can use the below commands from inside a Jupyter Notebook shell:

# install
!pip install pycodestyle pycodestyle_magic


# load
%load_ext pycodestyle_magic


# use
%%pycodestyle
def square_of_number(
     num1, num2, num3, 
     num4):
    return num1**2, num2**2, num3*

# Output
2:1: E302 expected 2 blank lines, found 0
3:23: W291 trailing whitespace

• Check this question out for more details. My answer is inspired by the answers in the link.
• Check out this question for more similar linters and solutions.

Yes - you can run any standard Python code quality tool on a Jupyter Notebook using nbQA

e.g.:

pip install -U nbqa pylint
nbqa pylint notebook.ipynb

disclaimer: I"m the author of nbQA

If you want to use the black linter in Jupyter:

pip install black "black[jupyter]"
black {source_file_or_directory}

If you want to auto-lint your notebooks with a pre-commit hook, you have to replace id: black with id: black-jupyter (more info here).

You can use FlakeHell to run any number of linters supported by flake8 on entire notebooks