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-0.2.8.dev20220803222444.tar.gz (24.0 kB view details)

Uploaded Source

Built Distribution

duet-0.2.8.dev20220803222444-py3-none-any.whl (29.0 kB view details)

Uploaded Python 3

File details

Details for the file duet-0.2.8.dev20220803222444.tar.gz.

File metadata

  • Download URL: duet-0.2.8.dev20220803222444.tar.gz
  • Upload date:
  • Size: 24.0 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.8.3 requests/2.28.1 setuptools/58.1.0 requests-toolbelt/0.9.1 tqdm/4.64.0 CPython/3.10.4

File hashes

Hashes for duet-0.2.8.dev20220803222444.tar.gz
Algorithm Hash digest
SHA256 231f49dc3341f60d39df5093ef39d2017907200cff23a03e5ffe7e8f454e83b6
MD5 0659b18dbd81aeecfe42dfcb0b5729d6
BLAKE2b-256 af6dbf987cb683d3c0ee6cfd3d91f17398b764761695d0f886e52910e03a07bd

See more details on using hashes here.

File details

Details for the file duet-0.2.8.dev20220803222444-py3-none-any.whl.

File metadata

  • Download URL: duet-0.2.8.dev20220803222444-py3-none-any.whl
  • Upload date:
  • Size: 29.0 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/3.3.0 pkginfo/1.8.3 requests/2.28.1 setuptools/58.1.0 requests-toolbelt/0.9.1 tqdm/4.64.0 CPython/3.10.4

File hashes

Hashes for duet-0.2.8.dev20220803222444-py3-none-any.whl
Algorithm Hash digest
SHA256 fa43877bb8eb5139a04a1e8f0c1a7b815b825b371943f8e22743bfd8922f9648
MD5 bafd252fc288cdf1f7a425a3cb80b2e7
BLAKE2b-256 52bc09a15fef2bb6c1c9ab67e2a558ffdadf26339f21757cb2818ed4df4052f3

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