colablinter 0.0.1

Linting and formatting Python code in Google Colab.

colablinter

Overview

colablinter is an IPython magic command extension for Jupyter and Google Colab environments.

It integrates the high-speed linter ruff and import sorter isort to perform cell-by-cell code quality and formatting checks.

Magic Commands

Command	Role	Description
%%check	Quality Check	Displays a linting report.
%%format	Format, Sort	Displays a formatting preview (for copy/paste)

After executing a magic command, the original code of the cell is executed (if applicable to the command).

Installation

Requires Python 3.12 or newer.

pip install colablinter

Usage

The extension must be explicitly loaded in the notebook session before use.

%load_ext colablinter

1. Check Code Quality

   Use %%check to see linting reports.

   %%check
   
   def invalid_code(x):
       return x + y # 'y' is not defined
   

   Output examples:

   --- Code Quality & Style Check Report ---
   F821 Undefined name `y`
   --> notebook_cell.py:4:16
   |
   2 | def invalid_code(x):
   3 |     return x + y # 'y' is not defined
   |                ^
   |
   
   Found 1 error.
   -------------------------------------------
   

2. Format code preview

   %%format will display the formatted code, but the cell executes the original code.

   %%format
   import sys
   import os
   def calculate_long_sum(a,b,c,d,e,f):
       return (a+b+c)*(d+e+f)  # messy
   

   Output examples:

   # Formatted Code
   import os
   import sys
   from datetime import datetime
   
   
   def calculate_long_sum(a, b, c, d, e, f):
       return (a + b + c) * (d + e + f)  # messy