The Real Python Podcast

Limitations in Human and Automated Code Review

7 snips
Mar 27, 2026
Christopher Trudeau, PyCoders Weekly contributor and Python educator, joins to highlight tools and trends shaping code review. They contrast human limitations like fatigue with where linters, formatters, and automated tools win. Conversation also touches on LLM-generated code, task queues, context managers, and useful community projects.
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INSIGHT

Humans Miss Common Bugs Due To Cognitive Limits

  • Humans are poor at catching many classes of bugs due to cognitive limits like inattentional blindness and vigilance fatigue.
  • The hosts recommend using automated tests, linters, formatters, and security scanners to catch most routine issues before human review.
ADVICE

Use Reviews To Fix Process And Teach Engineers

  • Use code review for process failures, learning, and breaking team ruts rather than nitpicking style.
  • Christopher Trudeau highlights reviews as opportunities for onboarding, teaching, and catching recurring bugs like SQL injection.
INSIGHT

LLMs Produce Different, Harder To Spot Bugs

  • LLMs change the error profile of generated code: fewer trivial mistakes but harder, systematic misunderstandings.
  • The hosts note generated code often repeats or implements from first principles instead of using existing libraries, creating maintenance burden.
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