redis-py Migrate from flake8 to black (Fix)

The Fix

pip install redis==7.1.0

Based on closed redis/redis-py issue #1644 · PR/commit linked

Production note: Most teams hit this during upgrades or environment changes. Roll out with a canary and smoke critical endpoints (health, OpenAPI/docs) before 100%.

Open PR/Commit

@@ -1,9 +1,10 @@
 import functools
 import itertools
-import redis
 import sys
 import timeit

fix.md

Option A — Upgrade to fixed release\npip install redis==7.1.0\nWhen NOT to use: This fix is not suitable if existing formatting tools are preferred.\n\n

Why This Fix Works in Production

Trigger: - [ ] Changing our tox linter to run black locally, so that changes can be examined prior to commit
Mechanism: Migrated the codebase from flake8 to black and added isort for code formatting
Why the fix works: Migrated the codebase from flake8 to black and added isort for code formatting. (first fixed release: 7.1.0).

Production impact:

If left unfixed, the same config can fail only in production (env differences), causing startup failures or partial feature outages.

Why This Breaks in Prod

Migrated the codebase from flake8 to black and added isort for code formatting
Production symptom (often without a traceback): - [ ] Changing our tox linter to run black locally, so that changes can be examined prior to commit

Proof / Evidence

GitHub issue: #1644
Fix PR: https://github.com/redis/redis-py/pull/1734
First fixed release: 7.1.0
Reproduced locally: No (not executed)
Last verified: 2026-02-09
Confidence: 0.85
Did this fix it?: Yes (upstream fix exists)
Own content ratio: 0.72

Discussion

High-signal excerpts from the issue thread (symptoms, repros, edge-cases).

Jump to Sources Open on GitHub

“I would gladly start contributing on this repository by taking on this issue! My two cents, I think there should not be a migration but…”

@WisdomPill · 2021-10-28 · source

“Awesome! Very much looking forward to seeing this in action - especially as I haven't really seen isort in production yet. I assigned this to…”

@chayim · 2021-10-28 · source

“@WisdomPill Any idea when you think you'd like to attack this?”

@chayim · 2021-11-15 · source

“Hello, sorry, I did not have much free time in the past weekends, I should be able to work on it the next weekend, if…”

@WisdomPill · 2021-11-15 · source

Failure Signature (Search String)

- [ ] Changing our tox linter to run black locally, so that changes can be examined prior to commit
- [ ] Enabling a pre-commit check with github hooks, for the local repo, so that ideally nothing is committed that doesn't pass black.

Copy-friendly signature

signature.txt

Failure Signature
-----------------
- [ ] Changing our tox linter to run black locally, so that changes can be examined prior to commit
- [ ] Enabling a pre-commit check with github hooks, for the local repo, so that ideally nothing is committed that doesn't pass black.

Error Message

Signature-only (no traceback captured)

error.txt

Error Message
-------------
- [ ] Changing our tox linter to run black locally, so that changes can be examined prior to commit
- [ ] Enabling a pre-commit check with github hooks, for the local repo, so that ideally nothing is committed that doesn't pass black.

Why It Broke

Migrated the codebase from flake8 to black and added isort for code formatting

Fix Options (Details)

Option A — Upgrade to fixed release Safe default (recommended)

pip install redis==7.1.0

When NOT to use: This fix is not suitable if existing formatting tools are preferred.

Use when you can deploy the upstream fix. It is usually lower-risk than long-lived workarounds.

Fix reference: https://github.com/redis/redis-py/pull/1734

First fixed release: 7.1.0

Last verified: 2026-02-09. Validate in your environment.

When NOT to Use This Fix

This fix is not suitable if existing formatting tools are preferred.

Did This Fix Work in Your Case?

Quick signal helps us prioritize which fixes to verify and improve.

Prevention

Capture the exact failing error string in logs and tests so you can reproduce via a minimal script.
Pin production dependencies and upgrade only with a reproducible test that hits the failing path.

Version Compatibility Table

Version	Status
7.1.0	Fixed

Related Issues

No related fixes found.

Cluster: redis-py:configuration-error redis-py hub redis-py best practices All hubs All clusters

Related clusters: Retry storm Data consistency Race condition

Sources

We don’t republish the full GitHub discussion text. Use the links above for context.