Functions

Security notes, SOC lab write-ups and tested code by Mahir Faysal, a SOC Level 1 cybersecurity learner in Bangladesh, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.

All notes Coding tips · 166 Learning notes · 25 Practice · 1

Coding tips

UnboundLocalError: cannot access local variable where it is not associated with a value in Python: 10 Causes and Fixes (Tested Examples)

Python raises UnboundLocalError: cannot access local variable when a function reads a local name before it has a value. Here are 10 real causes, from += on a global to closures, late imports and except-as, with the exact tracebacks from my tests and the fixes that work.

November 8, 2026 · 14 min read · 9 views