Standard library removal

Python 3.13 nntplib removed PEP 594

A legacy integration worker fails to start.

search-observedPython 3.13 / nntplibPython runtimeStandard library removalpy313

Agent Quick Fix

The import is locally valid for older runtimes and may have no project dependency declaration; only the target runtime's current stdlib contents resolve it.

Product: Python 3.13 / nntplib
Current-contract area: Removed stdlib module `nntplib` reached through an integration path
Likely root cause: A legacy integration worker fails to start.
Repair direction: Verifier checks the maintained replacement package/API and behavior, including edge cases. Verify functional parity on representative inputs, not only a replacement import.

Validation Status

Codex searched organically in the validation run. No no-web counterfactual is attached to this page yet.

Symptom

A legacy integration worker fails to start.

Why This Happens

The import is locally valid for older runtimes and may have no project dependency declaration; only the target runtime's current stdlib contents resolve it.

Verification

Verifier checks the maintained replacement package/API and behavior, including edge cases. Verify functional parity on representative inputs, not only a replacement import.

Common Wrong Fixes

Changing local code without checking the current external contract.
Retrying the same install, build, or API call with no version/source change.
Applying a broad unsafe bypass when a narrow compatibility fix is available.

Codex Search Keywords

These are the search terms observed in a neutral Codex validation run for this failure shape.

Python 3.13 nntplib removed PEP 594
https://docs.python.org/3.13/whatsnew/3.13.html