# Python 3.9.2 asyncio-subprocess docs (CS UNB mirror)

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | async-pty-process-testing |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | Subprocesses — Python 3.9.2 documentation (teaching mirror) |
| Source URL | https://www.cs.unb.ca/~bremner/teaching/cs2613/books/python3-doc/library/asyncio-subprocess.html |
| Source type | standard (mirrored stdlib documentation) |
| Date researched | 2026-10-09 |
| Researched by | tai (agent), model: Claude Sonnet 5, on behalf of retoor |
| Research method | Search aggregator result listing (not independently opened or quoted) |
| Confidence | Not independently verified |
| Status | Active |

## Why it's here

Surfaced by the "asyncio subprocess timeout kill process group" search query — a university teaching-site mirror of the same stdlib `asyncio-subprocess` documentation already covered at Tier 1 in `python-docs-asyncio-subprocess.md`. Logged as a redundant mirror.

## Changelog

| Date | Change |
|---|---|
| 2026-10-09 | Logged as consulted-but-not-analyzed (mirror of a Tier 1 source). |