# Zarr-Python 3 release

**URL:** <https://discourse.pangeo.io/t/zarr-python-3-release/4803>\
**Category:** Jobs\
**Tags:** zarr\
**Created:** [January 9, 2025, 5:29pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803 "2025-01-09T17:29:53Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![jhamman](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/jhamman/32/34_2.png) [@jhamman](https://discourse.pangeo.io/u/jhamman)\
**Post date:** [January 9, 2025, 5:29pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/1 "2025-01-09T17:29:54Z")

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We released Zarr-Python 3 today, complete with support for the v3 spec, new extensions (chunk-sharding) and significant performance gains.

> **[Zarr-Python 3 is here!](https://zarr.dev/blog/zarr-python-3-release/)**
>
> Zarr-Python 3 is here! This release brings support for Zarr’s v3 specification, new extensions, and major

Xarray v2025.01.1 was also released today with full support for Zarr-Python 3.

Looking forward to hearing how it works for everyone.

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**Author:** ![TomNicholas](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/tomnicholas/32/3189_2.png) [@TomNicholas](https://discourse.pangeo.io/u/TomNicholas)\
**Post date:** [January 9, 2025, 5:30pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/2 "2025-01-09T17:30:30Z")

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Huge, congratulations!

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**Author:** ![mrocklin](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/mrocklin/32/2280_2.png) [@mrocklin](https://discourse.pangeo.io/u/mrocklin)\
**Post date:** [January 9, 2025, 7:05pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/3 "2025-01-09T19:05:16Z")

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Nice work! I’m excited to see what happens as this spreads around.

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**Author:** ![jbusecke](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/jbusecke/32/118_2.png) [@jbusecke](https://discourse.pangeo.io/u/jbusecke)\
**Post date:** [January 9, 2025, 7:06pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/4 "2025-01-09T19:06:54Z")

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Amazing. Congrats to the whole team!

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**Author:** ![maxrjones](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/maxrjones/32/3190_2.png) [@maxrjones](https://discourse.pangeo.io/u/maxrjones)\
**Post date:** [January 9, 2025, 9:13pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/5 "2025-01-09T21:13:57Z")

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Amazing work and congratulations!

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**Author:** ![TomAugspurger](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/tomaugspurger/32/21_2.png) [@TomAugspurger](https://discourse.pangeo.io/u/TomAugspurger)\
**Post date:** [January 9, 2025, 10:40pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/6 "2025-01-09T22:40:08Z")

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Congrats, and nice work everyone!

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**Author:** ![rabernat](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pangeo.io/rabernat/32/22_2.png) [@rabernat](https://discourse.pangeo.io/u/rabernat)\
**Post date:** [January 10, 2025, 4:29pm UTC](https://discourse.pangeo.io/t/zarr-python-3-release/4803/7 "2025-01-10T16:29:53Z")

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In my view, the end-to-end async capabilities are one of the most exciting pieces of this release. Zarr is primarily an I/O library, so it makes total sense for it to be async. I’m eager to see how folks building APIs / web services / etc. are able to take advantage of this to deliver big performance gains.

However, to fully realize this potential, we will also have to bring async to Xarray, since most Pangeo users interact with Zarr via Xarray.

Imagine being able to write code like

```python

async def extract_point(x, y):
    ds = await xr.async.open_dataset("s3://data.zarr")
    return await ds.async.sel(x=x, y=y)

```

This is now feasible with Zarr Python 3 under the hood.