01Module 02 - Systems Programming OverviewOS primitives, sockets, file descriptors, shared memory, IPC, and writing C extensions - the full systems programming toolkit for Python engineers.02OS Primitives in PythonProcesses, signals, environment, users, time, and the os/signal/resource modules - Python's interface to the POSIX operating system.03Sockets and NetworkingBSD socket API in Python, TCP/UDP from scratch, non-blocking sockets, Unix domain sockets, and building a minimal HTTP server.04File Descriptors and I/OFile descriptors, the VFS layer, O_flags, select/poll/epoll, io module internals, and zero-copy techniques.05Shared Memory and IPCPOSIX shared memory, pipes, FIFOs, message queues, semaphores, and multiprocessing.shared_memory - Python inter-process communication.06Writing Python C ExtensionsThe Python C API, writing and building a C extension module, PyArg_ParseTuple, error handling, reference counting in C, and CFFI/ctypes alternatives.