Skip to main content

A simple future-based async library for python.

Project description

This is a development version of Duet and may be unstable.

For the latest stable release see https://pypi-hypernode.com/project/duet/.

duet

A simple future-based async library for python

Duet takes inspiration from the amazing trio library and the structured concurrency approach to async programming that it uses. However, duet differs from trio in two major ways:

  • Instead of a full-blown implementation of asynchronous IO, duet relies on the Future interface for parallelism, and provides a way to run async/await coroutines around those Futures. This is useful if you are using an API that returns futures, such as RPC libraries like gRPC. The standard Future interface does not implement __await__ directly, so Future instances must be wrapped in duet.AwaitableFuture.

  • duet is re-entrant. At the top level, you run async code by calling duet.run(foo). Inside foo suppose you call a function that has not yet been fully refactored to be asynchronous, but itself calls duet.run(bar). Most async libraries, including trio and asyncio, will raise an exception if you try to "re-enter" the event loop in this way, but duet allows it. We have found that this can simplify the process of refactoring code to be asynchronous because you don't have to completely separate the sync and async parts of your codebase all at once.

Installation

Install from pypi:

pip install duet

Note

duet is not an official Google project.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

duet-0.2.7.dev20220617131325.tar.gz (23.9 kB view details)

Uploaded Source

Built Distribution

duet-0.2.7.dev20220617131325-py3-none-any.whl (28.7 kB view details)

Uploaded Python 3

File details

Details for the file duet-0.2.7.dev20220617131325.tar.gz.

File metadata

  • Download URL: duet-0.2.7.dev20220617131325.tar.gz
  • Upload date:
  • Size: 23.9 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.7.1 requests/2.26.0 setuptools/54.2.0 requests-toolbelt/0.9.1 tqdm/4.62.3 CPython/3.8.8

File hashes

Hashes for duet-0.2.7.dev20220617131325.tar.gz
Algorithm Hash digest
SHA256 9fbe8ae6bbbc5b486d8d1990aabd70d911b2d3d066d5e9ad9803592c5e697195
MD5 a1e22d14d7fb633cd8ad1fa62d16deda
BLAKE2b-256 bd16d716905088de5a3d61e82170d9d31aab5f917a15d293677fe1f06e571c1a

See more details on using hashes here.

File details

Details for the file duet-0.2.7.dev20220617131325-py3-none-any.whl.

File metadata

  • Download URL: duet-0.2.7.dev20220617131325-py3-none-any.whl
  • Upload date:
  • Size: 28.7 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.7.1 requests/2.26.0 setuptools/54.2.0 requests-toolbelt/0.9.1 tqdm/4.62.3 CPython/3.8.8

File hashes

Hashes for duet-0.2.7.dev20220617131325-py3-none-any.whl
Algorithm Hash digest
SHA256 87a30c4fd06e9e54bd7c3cd50fc5aed50f976aa9e010fb6079e76382bb6726b4
MD5 343505da31ec627ddc466af811e3492f
BLAKE2b-256 6a7c002ae9408397470940dd7997f042f2fcbf8c3fba85f121ef1148f982e014

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page