Liked Pydantic? You'll LOVE Msgspec

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If you've ever needed to work with JSON, TOML, YAML, MessagePack, or even structured data, you'll know how many tools are out there. But what if I told you there was one tool that could do all of those things, complete with a consistent API and with speed as a focus? Well, have I got the treat for you!
00:00 - Intro
00:55 - Working with JSON, TOML, YAML, and MessagePack data [1]
05:38 - Serialisation and deserialisation benchmarks [2-3]
08:56 - Using Pydantic-like structs [4]
13:53 - Struct benchmarks [2-3]
15:16 - Outro
[1] jcristharif.com/msgspec/usage...
[2] jcristharif.com/msgspec/bench...
[3] github.com/Carberra/python-is...
[4] jcristharif.com/msgspec/struc...
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Опубликовано:

28 июл 2024

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Комментарии : 23

@Mekuso8 19 дней назад

The "strange" validation that msgspec does is completely on purpose and it fits very well with how I typically use it. Validations at runtime should, IMO, be a last resort as it slows everything down. It's only applied upon decoding, where it's really needed. Everything else is much better handled ahead of time by other libraries like mypy.

@YogenderSinghBhabhoria 16 дней назад

Just to clarify the writing modes are binary and text(default), where binary mode returns byte object.

@hansdietrich1496 21 день назад

Using it for quite a while already. Great piece of software, highly recommended.

@Chiny_w_Pigulce 21 день назад

Used it in two projects, it's great

@ChrisHalden007 20 дней назад

Great video. Thanks

@veritas-odium-parit 21 день назад

According to my experience from a project it gets additional speedups if you use the provided Decoder or encoder classes.

@Carberra 21 день назад

Which provided classes sorry?

@oliver3880 21 день назад

@@Carberra you can init a decoder/encoder instance and re-use it. Moreover you can set a decoder/encoder to a specific struct increasing performance even more. dec = msgspec.json.Decoder() dec.decode(msg) say you have some defined msgspec.Struct called ResponseMsg dec = msgspec.json.Decoder(type=ResponseMsg, strict=True) this will decode the json into the ResponseMsg struct and raises an error if the json doesnt comply with your defined struct.

@Carberra 21 день назад

Oooh I see. That's really neat actually!

@dipeshsamrawat7957 21 день назад

Thanks.

@thekokoserver 21 день назад

Esmerald python web framework has this built in with msgspec and is a very fun to work with😊😊

@raccoonteachesyou 21 день назад

Hi ! Great video, very concise and interesting ! I'm kind of curious about the validator section tho, you can instantiate Structs with bad values but can't dump them. The only workaround I've seen for this is to implement a __post__init method and writing custom logic, but that's not ideal. Do you know if there's other ways to do this ? Thanks !

@Carberra 21 день назад

As far as I can tell it's the only way, short of contributing something. It does strike me as somewhat of an intentional decision though, which is a bit annoying.