two-picking-positions-engine

From frontend to shipping backend

Your personal course for learning Python backend on this exact service — taught through its real code, bridged from what you already know as a senior frontend dev.

🎯 Mission: independently ship a change to this service. Eight sessions, each ending in a concrete skill that gets you there. Pace ~6+ h/week.

Start here

all sessions
📒

Exercise Workbook

The whole curriculum + every exercise in one phone-friendly page. Read theory anywhere, tap quizzes for instant feedback.

 deep dive
🛤️

Session 1 — Request lifecycle

The full first lesson: how a request becomes a response. Routing, async & the event loop, JSON serialization.

Two ways to learn

📱 On your phone

Read the theory recaps, do the 🧠 think prompts, and tap through the 📖 quizzes (instant feedback, works offline).

🤝 With Claude

Bring the hands-on 🤝 exercises to our sessions — I'll spin up the local stack and we write/run/debug code together.

The 8 sessions

1
Request lifecycleDeep dive
Routing · async · JSON — the map of every change.
app/app.py
 2
Pydantic models & validationWorkbook
The request/response contracts — your most-pulled lever.
models/model.py
 3
Redis — cache & stateWorkbook
Why a backend needs memory outside the process. Hash + sorted set.
repositories/redis_repository.py
 4
RabbitMQ — messagingWorkbook
Staying in sync without being called. 1 queue, 3 exchanges.
consumers/rabbit_consumer.py
 5
Postgres — the databaseWorkbook
Durable storage & reading SQL critically.
app/utilities.py
 6
Concurrency & runtimeWorkbook
Workers vs threads vs async — why latency behaves the way it does.
gunicorn_conf.py
 7
Config & secretsWorkbook
How one codebase serves 5 countries.
configs/app_config.py
 8
Capstone — ship an MRWorkbook
Run locally → change → verify → MR. The mission.
the whole loop

Trusted resources

FastAPI tutorial FastAPI: async Pydantic docs Real Python Redis University RabbitMQ tutorials SQLBolt (SQL) psycopg2 docs

Full annotated list in RESOURCES.md. Mission & progress in MISSION.md.