falconry/falcon

Use `ParamSpec` to type LRU cache decorators

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#2,629 opened on Apr 25, 2026

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enhancementgood first issuetyping

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Description

See here: https://github.com/falconry/falcon/pull/2599/changes#r2716854330.

Decorators like falcon.util.misc._lru_cache_* can be type using ParamSpec, allowing us to get rid of a bunch of typing ignores.

Contributor guide

Research direction
Examine the ` lru cache *` decorator functions in `falcon/util/misc.py` and apply `ParamSpec` to properly type them, removing existing `# type: ignore` comments.
Tech stack
python
Domain
backend
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Python typingParamSpec
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60