Python decorator to log local variables with each line of code run
Print each local variable and line of code at execution
Python decorator to log local variables with each line of code run launched on December 2, 2023 with 42 votes, #750 of 3,780 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
This Python decorator automatically logs local variables at each line of code execution. It helps developers debug by tracking variable values throughout function runs. The tool is aimed at Python developers who need detailed visibility into program state during execution. It installs via PyPI and integrates directly into code through decorator syntax.
written from the facts on this page · September 2026
From the sources
I wrote this before I learnt about Snoop : https://github.com/alexmojaki/snoop a much polished version of the same concept and implementation with an additional set of debug tools. Tag your functions with the @tracelogger decorator to be logged line-by-line. Optionally provide a function as the printer argument that takes the local variable dictionary and returns a string. This allows the customisation of which variables and how you want to print at each line. See the example with the provided names_printer function that only prints a selected set of variables. The second width parameter determines the maximum character number for each line of code defaulting to 80 . Join the Code Quality…from pypi.org
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