Python Architecture
Activate when creating new modules, refactoring class hierarchies, introducing design...
Install
npx skills add microsoft/apm --skill python-architecture -g -a claude-code -y- Repository
- microsoft/apm4.2k
- Category
- Design
- Updated
- 6d ago
- License
- MIT
- Context cost
- Lightabout 296 tokens
- Runs scripts
- No, instructions only
What it does
Activate when creating new modules, refactoring class hierarchies, introducing design patterns, or making changes spanning 3+ files in the APM CLI codebase.
Python Architecture Skill
When to activate
- Creating new Python modules or packages under
src/apm_cli/ - Refactoring class hierarchies or introducing base classes
- Changes that touch 3+ files with shared logic patterns
- Introducing new design patterns (Strategy, Observer, etc.)
- Cross-cutting concerns (logging, auth, error handling)
- Performance-sensitive paths (parallel downloads, large manifests)
Key rules
- Follow existing patterns (BaseIntegrator, CommandLogger, AuthResolver) before inventing new ones
- Prefer composition over deep inheritance
- Push shared logic into base classes, not duplicated across siblings
- One canonical owner per decision: route through the existing authority (target_catalog, AuthResolver/host_providers, runtime registry, CommandLogger, CompiledOutputWriter, deployment_ledger, install-outcome, neutral hook IR, BaseIntegrator); extend it, never fork it. Full rule:
.apm/instructions/architecture.instructions.md - Lock every centralization with a dual guardrail: a regression test plus a static check in
scripts/lint-architecture-boundaries.sh
