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Python asyncio Reference — async/await, gather, tasks, timeouts, aiohttp, and common mistakes

⚡ Python asyncio Reference

async/await fundamentals, asyncio.gather vs create_task, timeouts, running sync code without blocking, async context managers, aiohttp patterns, Queue producer/consumer, Lock/Semaphore, and the mistakes that silently kill performance.

🔍 Free tool: PyPI Package Health Checker — check aiohttp, aiofiles, and other async packages for EOL status, known CVEs, and latest version.