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Aleksei Aleinikov
Aleksei Aleinikov

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๐Ÿš€ How to Build a Mini Async Framework in Python (2025 Edition)

Ever wondered how asyncio works under the hood? Letโ€™s break it down by building a lightweight asynchronous framework โ€” from generators and coroutines to locks and an event loop. Perfect for understanding async Python deeply. ๐Ÿง โœจ

๐Ÿ”ง Key Concepts Covered:

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

๐Ÿ’ก Example Use Cases:

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

๐ŸŒ€ Each generator task "yields" control so other tasks can run. Itโ€™s like a turn-based system for functions โ€” smooth, efficient, and fun to build.

๐ŸŽฏ This isnโ€™t just theory โ€” itโ€™s hands-on async architecture.

Mastering this builds true confidence in Pythonโ€™s concurrency model.

๐Ÿ“– 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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