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Build a YAML Parser

Build a YAML 1.2 parser: indentation-based block style, flow style for inline data, scalar type inference (and the Norway problem), multi-line literal/folded strings, anchors + aliases for DRY configs, and the format behind Kubernetes/Helm/Ansible/GitHub Actions.

advanced10 lessons4 chapters10 graded exercisesPython
Start course — it’s freeWork in your own editor

No sign-up needed for lesson 1 · certificate on completion · sign up to save progress

What you’ll have built

Chapter by chapter. Every step is a graded exercise.

  • YAML Basics
  • Block Style
  • Flow & Tags
  • Production
Starts in Python — solve in the language you choose in the editor, same tests either way.

Curriculum

4 chapters, 10 lessons. Each lesson is a short read, one graded exercise, and a quiz.

  1. 1What YAML IsRead · exercise · quiz
  2. 2ScalarsRead · exercise · quiz
  3. 3Indentation RulesRead · exercise · quiz
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