PyPepper
Composable building blocks for Python microservices.
Build faster. Live more.
In memory of my father, who passed away in 2023 from COVID-19.
PyPepper packages the pieces you wire into services: HTTP / SSE, FSM, a workflow scheduler, signed events, thin DB helpers, and optional OpenTelemetry tracing — for Python 3.10–3.14.
Documentation
Getting Started · Architecture · Guides · API Reference
Source under docs/. Local preview: make docs-serve.
Domains
| Package | Role | |
|---|---|---|
| Common | pypepper.common |
Config, logging, context, cache, crypto, utilities |
| Event | pypepper.event |
Signed domain events with JSON marshal |
| FSM | pypepper.fsm |
Event-triggered state machine with rollback |
| Scheduler | pypepper.scheduler |
Job → Channel → Worker → Workflow |
| Network | pypepper.network |
FastAPI HTTP server and SSE subsystem |
| Helper | pypepper.helper |
MySQL / PostgreSQL / MongoDB connectors |
Highlights
| Network | FastAPI HTTP + SSE with API-key auth and rate limits → guide |
| FSM & events | Rollback on handler failure; signed payloads → guide |
| Scheduler | Workflow job pipeline with retries → guide |
| Tracing | Opt-in OpenTelemetry (console / local Jaeger) → guide |
| Quality | PEP 561 py.typed · ruff + mypy CI · coverage ≥ 90% |
| Data | Thin DB helpers → guide |
Quick start
Requires Python 3.10–3.14 and uv ≥ 0.10.7 (recommended).
make build-prepare
export PYPEPPER_SSE_API_KEY=your-local-key
python example/sse/app.py
HTTP example:
python example/server/app.py --config ./conf/app.config.yaml
Full walkthrough: Getting Started.
Developer commands
make lint # ruff + mypy
make test # check + pytest (coverage ≥ 90%)
make docs # mkdocs build --strict
make docker # local image
make clean
1 maintainer
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