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Based on my experience. At some places where there were no better alternatives, framework utilizes sync functions under the hood, such as some databases. Over

• whilenot-dev 2y ago
  To GP: yes, it would block the event loop and that's pretty bad. But... asyncio.to_thread[0] as a quick workaround, just keep track of your thread count. Obviously frameworks and libraries with asyncio support should be chosen whenever possible. > Overall there are also places where functions are async running in sync bodies, but they're not running on main thread. That would be a design mistake, as functions have colors[1] with async/await. That's currently my biggest gripe in the python ecosystem, apart from modules maintaining their own hidden state. [0]: https://docs.python.org/3/library/asyncio-task.html#asyncio.to_thread https://docs.python.org/3/library/asyncio-task.html#asyncio.... [1]: https://journal.stuffwithstuff.com/2015/02/01/what-color-is-your-function/ https://journal.stuffwithstuff.com/2015/02/01/what-color-is-...