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-0.2.2.dev20210902140543.tar.gz (23.0 kB view details)

Uploaded Source

Built Distribution

duet-0.2.2.dev20210902140543-py3-none-any.whl (30.7 kB view details)

Uploaded Python 3

File details

Details for the file duet-0.2.2.dev20210902140543.tar.gz.

File metadata

  • Download URL: duet-0.2.2.dev20210902140543.tar.gz
  • Upload date:
  • Size: 23.0 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.7.0 requests/2.25.1 setuptools/44.1.1 requests-toolbelt/0.9.1 tqdm/4.60.0 CPython/3.9.2

File hashes

Hashes for duet-0.2.2.dev20210902140543.tar.gz
Algorithm Hash digest
SHA256 ed651269f257a59977ffe7e093310e783290e23ac7d65ff0d72fb9b1dc179beb
MD5 7b1880648c054a3efb1725b39b7a5802
BLAKE2b-256 a6a0900bae5f00dac12c167b78738e68411fe2bf95120a7742159015560d1127

See more details on using hashes here.

Provenance

File details

Details for the file duet-0.2.2.dev20210902140543-py3-none-any.whl.

File metadata

  • Download URL: duet-0.2.2.dev20210902140543-py3-none-any.whl
  • Upload date:
  • Size: 30.7 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.7.0 requests/2.25.1 setuptools/44.1.1 requests-toolbelt/0.9.1 tqdm/4.60.0 CPython/3.9.2

File hashes

Hashes for duet-0.2.2.dev20210902140543-py3-none-any.whl
Algorithm Hash digest
SHA256 042844f376c71e1933cebf2974ac4ec19ccf0ca6dbcf2a856cb5455a12bcd3eb
MD5 857aba87d745824d1ac0ff7ec6928bd3
BLAKE2b-256 4028eefe985df19080ca7a339c0ca663cfd358b1975fd4aab31e30009a9abc32

See more details on using hashes here.

Provenance

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