Public validation example

One script. Three tests. Reproducible output.

This owned, synthetic example shows the exact delivery shape of the single-file Python automation service. It is runnable portfolio proof, not client work.

1Python script

0runtime dependencies

3tests passed

3sample files

Run it

python summarize_files.py sample-input --output reproduced-output.json
python -m pytest -q test_summarize_files.py

Validated on Python 3.13: the script reported 3 files / 115 bytes, followed by 3 passed.

What the script does

scans a directory recursively and sorts paths for stable output;
reports file counts, byte totals, and extension counts;
computes a SHA-256 checksum for every included file;
excludes hidden files by default, with an explicit opt-in flag; and
writes deterministic, human-readable JSON without network access.

Sample output

{
  "schema_version": "1.0",
  "root": "sample-input",
  "file_count": 3,
  "total_bytes": 115,
  "extensions": {".csv": 1, ".md": 1, ".txt": 1}
}

Download and verify

Python script Pytest file Generated JSON Runbook Contra case study

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