Topic

YAML

Config files that look friendly until the indentation bites. Parsing it, linting it and avoiding its type surprises.

YAML

Converting YAML to XML With Python and Valid Names

Convert YAML to XML with xmltodict, using @ keys for attributes, repeated elements for lists, and checks for invalid names and the single-root rule.

7 min read

YAML

Converting a CSV Into a YAML List With Correct Types

Turn CSV rows into a YAML list of mappings in Python, keeping zip codes as text and giving integers, floats, booleans and empty cells the right types.

6 min read

YAML

Converting YAML to CSV for Review in a Spreadsheet

Flatten a YAML list of service records into a CSV a reviewer can sort and filter, handling nested keys, list values, missing fields and Excel encoding.

6 min read

YAML

Converting JSON to YAML Without Losing Types or Quotes

Convert JSON to YAML with a YAML library so strings like yes, 3.10 and 02134 keep their quotes, and see what string formatting does to the same data.

7 min read

YAML

Converting YAML to JSON in Python Without Date Errors

Convert YAML to JSON with PyYAML and json, and handle the cases that break it: dates, sets, integer keys, NaN, anchors, several documents and complex keys.

6 min read

YAML

Converting YAML to JSON With yq and Back Again Cleanly

yq converts YAML to JSON and back in one command. The same file gave different JSON in yq and PyYAML, and a big integer made yq fail. Flags and traps.

6 min read

YAML

YAML Versus JSON for Configuration Files That Last

Comments, types, size, parse speed and safety compared with measured numbers, plus why JSON is nearly valid YAML. One format costs 55 times more to parse.

6 min read

YAML

Documenting Datasets in YAML and Catching Schema Drift

Describe a dataset in YAML, render a Markdown table from it and compare it with the live table to catch columns added or dropped without a doc.

6 min read

JSONGuide

Converting JSON to CSV XML YAML and Excel Without Surprises

A working guide to converting JSON to CSV, XML, YAML, Excel, SQL and Markdown and back: what each format cannot hold, a 23 field round trip test, and checks.

18 min read

YAML

Testing YAML Driven Jobs With pytest and Hypothesis

Test a YAML pipeline runner with pytest: order, unknown steps, cycles, duplicates, a Hypothesis property over random graphs and a check that the tests bite.

7 min read

YAML

Config Driven Pipelines and Their Limits With Numbers

Measure what a YAML pipeline file costs to load, validate and order from 100 to 50,000 steps, then see where the file stops being the right place for logic.

7 min read

YAML

Generating SQL From YAML Templates Safely With Bound Values

See an f-string builder turn a YAML job file into a dropped table, then fix it with bound values, quoted identifiers and an allow-list of tables.

6 min read

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