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Use when writing or reviewing Python (3.10+) — modern idioms for typing, data modeling, control flow, and standard-library use, plus the anti-patterns to avoid (mutable default args, bare except, manual index loops, string-built paths).
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
基于 SOC 职业分类
Use when designing memory or persistent context for an agent — deciding what to persist vs. recompute, how to retrieve only what's relevant, and how to summarize/compact history to fit the context window. Use when an agent forgets, bloats its context, or repeats work.
Interactive installer for Rosetta. Guides users through selecting and installing skills and language-specific rules at user-level or project-level, verifies paths, and optionally optimizes installed files.
Instinct-based learning system that observes sessions via hooks, creates atomic instincts with confidence scoring, and evolves them into skills, commands, and agents.
Use when building or reviewing an evaluation for an LLM feature — assembling a representative test set, choosing pass criteria (exact match, programmatic checks, rubric, or LLM-as-judge), and catching regressions. Use when asking "how do I know this prompt or model change is better?"
Use when writing or reviewing a prompt for an LLM — making it specific, structured, and testable (clear task, role/context, examples, an explicit output contract, decomposition, room to reason) and avoiding the anti-patterns that make prompts brittle. Provider-agnostic.
Pattern for progressively refining context retrieval to solve the subagent context problem.
| name | writing-idiomatic-python |
| description | Use when writing or reviewing Python (3.10+) — modern idioms for typing, data modeling, control flow, and standard-library use, plus the anti-patterns to avoid (mutable default args, bare except, manual index loops, string-built paths). |
Idiomatic Python is readable, explicit where it counts, and leans on the standard library and the language's protocols rather than reinventing them. Target 3.10+.
list[int],
dict[str, int]), X | None over Optional[X], and from __future__ import annotations
only when you need forward refs.@dataclass (or typing.NamedTuple) over hand-written __init__/__eq__.typing.Protocol for structural typing instead of forcing inheritance.try/except around the operation rather than pre-checking, when the
happy path dominates.match for structural dispatch over long isinstance chains.return over deep nesting.pathlib.Path for filesystem paths, never string concatenation or os.path for new code.enumerate / zip instead of range(len(...)) index gymnastics.with (context managers) for files, locks, and any acquire/release pair.collections (defaultdict, Counter), itertools, and functools (cache, reduce)
before hand-rolling.f"…" for formatting; logging, not print, for diagnostics.def f(x=[])) — use None and create inside.except: or except Exception that swallows — catch specific types, re-raise or log.None/True with == instead of is.with.import *; deep wildcard imports.Run a formatter and linter (Black/Ruff) — idioms are about the patterns above, not whitespace. American English in identifiers and comments.