release-note-diff-cli

release-note-diff-cli is a small Python CLI for diffing two release note files and surfacing the additions that are most likely to matter.

It is built for a very normal workflow: cloud and product release notes change just enough month to month that scanning them manually gets slow and noisy.

Quick run

python3 release_note_diff.py sample_old.txt sample_new.txt

Sample output:

Added: 2
Removed: 0
Important additions: 2

Important additions:
- Launched detached invocation support
- Fixed retry bug in function executor

What it looks for

• lines added in the new release note file
• lines removed from the old file
• additions containing words like launch, fix, deprecated, limit, or support

The logic is deliberately simple. This is closer to a faster first pass than a full release note intelligence layer.

Good fit

• monthly or weekly release note review
• platform teams scanning for features, fixes, or breaking changes
• PM or field work where you want a short summary before reading the full notes

Boundaries

• plain text in, plain text out
• line-based diffing only
• no grouping by product area
• no attempt to understand the importance of a change beyond keyword matches

Repo shape

• release_note_diff.py contains the diff logic and CLI
• sample_old.txt and sample_new.txt give you a quick local run
• tests/test_release_note_diff.py covers the core addition and keyword-highlighting behavior

Related context

• Portfolio site
• Examples Are the Interface for Small Tools