# ChromiumOS chromite lib/tee.py

## Metadata

| Field | Value |
|---|---|
| Institute | Molodetz Institute — Research & Retrieval Division |
| Subject | async-pty-process-testing |
| Document type | Source Citation Card |
| Tier | 2 |
| Source title | lib/tee.py (chromite) |
| Source URL | https://cos.googlesource.com/mirrors/cros/chromiumos/chromite/+/HEAD/lib/tee.py |
| Source type | repository |
| 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 tee process output to file and stdout" search query as ChromiumOS's own `tee` implementation in its build tooling; a second, near-identical mirror of the same file at a different ChromiumOS source host also surfaced and is treated as the same source family. Not individually opened or quoted during this research pass.

## Changelog

| Date | Change |
|---|---|
| 2026-10-09 | Logged as consulted-but-not-analyzed. |