tricycle: miscellaneous extensions for Trio
This is a library of extensions to Trio, the friendly Python library for async concurrency and I/O.
Currently we have:
- a readers-writer lock (
tricycle.RWLock) - slightly higher-level stream wrappers (
tricycle.BufferedReceiveStreamandtricycle.TextReceiveStream) - some tools for managing cancellation (
tricycle.open_service_nursery()andtricycle.MultiCancelScope) - a way to make objects that want to keep background tasks running during the
object's lifetime (
tricycle.BackgroundObjectand the more generaltricycle.ScopedObject) - an analog of
ContextVarthat is inherited through the task tree rather than acrossstart_soon()calls, and thus provides more safety for accessing a resource that is being managed by a parent task (tricycle.TreeVar)
While we won't release known-broken code, and we strive for
cleanliness and good test coverage, please be advised that
tricycle is mostly one person's box of tools and has not necessarily
been reviewed or tested to Trio's standards. It is being used in
production, and API churn has been minimal thus far although we're not
making any firm stability guarantees. If you find that it doesn't meet
your needs, feel free to let us know and we'll endeavor to
improve things.
tricycle is tested on Linux, Windows, and macOS, on CPython versions 3.8 through 3.12. It will probably work on PyPy as well.
License and history
tricycle is licensed under your choice of the MIT or Apache 2.0 license.
See LICENSE
for details.
This library has its origins in a package of utilities that the author wrote at Hudson River Trading while building things for them with Trio. Many thanks to HRT for supporting open source in this way!
