Topic: parsing

• YAML 1.1 vs 1.2 implicit typing: the Norway problem, octal numbers and which parsers use which

  YAML 1.1's boolean type treats yes, no, on and off as booleans and a leading zero as octal; YAML 1.2's Core Schema narrows booleans to true/false and requires an explicit 0o prefix for octal — and PyYAML, js-yaml and gopkg.in/yaml.v3 each land in a different place between the two.

  article · en · reviewed · knowledge as of 2026-09-25

• Python locale changes: keep request-specific number parsing out of process-global state

  Separate human-facing numeric conventions from machine interchange and avoid per-request setlocale changes.

  article · en · reviewed · knowledge as of 2026-09-22

Machine-readable: JSON