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Aleksei Aleinikov
Aleksei Aleinikov

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πŸš€ How to Build a Mini Async Framework in Python (2025 Edition)

Ever wondered how asyncio works under the hood? Let’s break it down by building a lightweight asynchronous framework β€” from generators and coroutines to locks and an event loop. Perfect for understanding async Python deeply. 🧠✨

πŸ”§ Key Concepts Covered:

  • Generators β†’ Pause & resume execution (yield)
  • Coroutines β†’ Declare async workflows with async/await
  • Event loop β†’ Coordinates task execution
  • Locks β†’ Ensure safe access to shared resources
  • sleep() β†’ Custom delay without blocking the event loop

πŸ’‘ Example Use Cases:

  • Simulating parallel email sending
  • Multiple robots writing to shared memory with locks
  • Tasks that yield execution to mimic async scheduling

πŸŒ€ Each generator task "yields" control so other tasks can run. It’s like a turn-based system for functions β€” smooth, efficient, and fun to build.

🎯 This isn’t just theory β€” it’s hands-on async architecture.

Mastering this builds true confidence in Python’s concurrency model.

πŸ“– Full tutorial + source code included in the article: https://blog.devgenius.io/how-to-build-your-own-asynchronous-framework-in-python-in-2025-a-breakdown-of-generators-e5bbb0e1594b

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