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@yeraydiazdiaz
yeraydiazdiaz / threadpool_future_cancellation.py
Last active February 6, 2021 04:59
Cancellation on run_in_executor using ThreadPoolExecutor
"""
A demonstration on how raising KeyboardInterrupt in the context of tasks
spawned via asyncio's loop.run_in_executor does not cancel the threads
using any of the cancellation methods in asyncio Futures.
The only "proper" way to cancel is to:
1. unregister the `atexit` registered `_python_exit` function
2. call `shutdown(wait=False)`
The reason is that the `thread` module registers `_python_exit` forcing a
@sindresorhus
sindresorhus / esm-package.md
Last active July 14, 2025 05:53
Pure ESM package

Pure ESM package

The package that linked you here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

  1. Use ESM yourself. (preferred)
    Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
  2. If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
  3. Stay on the existing version of the package until you can move to ESM.