Code Review Focus: Readability, Error Handling, Tests, Performance, Consistency

Spent the last few years on both sides of the PR—getting feedback and giving it. And honestly? The thing that changed my perspective wasn't learning more patterns or tools. It was figuring out what actually matters when you're reviewing someone else's code. Took me a while to get there. Early on I'd nitpick formatting or argue about style. Now I focus on five things that actually move the needle: 1- Readability — Will someone understand this in 6 months without me explaining it? 2- Error handling — What happens when things break? (Spoiler: they will.) 3- Tests — Do they prove the code works, or just that it doesn't crash? 4- Performance — Any obvious stuff that'll bite us at scale? (N+1 queries, loading everything into memory, etc.) 5- Consistency — Does this look like it belongs in our codebase? The tone matters too. "Consider extracting this for readability" lands way better than "this is too long." Every review is a chance to teach, not just to correct. What's on your code review checklist? Curious what I'm missing. #Python #SoftwareEngineering #CodeReview #TechLeadership #Engineering

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