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- Networking commands, and where they get their datass, netstat, lsof, ip, tcpdump, nmap, dig — the handful of invocations worth memorising, and the data source behind each one.
- Pydantic, in practiceThe parsing boundary, and the handful of defaults that will surprise you coming from a typed language.
- Async_rpc, underneathHow Jane Street's async_rpc_kernel actually works on the wire — three message kinds, one dispatch table, and streaming smuggled into the payload.
- Enough Python to finish the exerciseEverything the hermes-protocol exercises need — environment, modules, classes, typing, pydantic, exceptions, generators.