bocadilloproject/bocadillo

A modern Python web framework filled with asynchronous salsa.

Marlysson Silva

@Marlysson

I think the problem it's other..

Failed building wheel for uvicorn

Failed build others resources too ( starlette, httptools .. )

Florimond Manca

@florimondmanca

Could you open a bug report with your specs (OS versions, Python version, etc) @Marlysson ?

That __version__ attribute error is very odd. Bocadillo has had that exposed since 0.1!

Marlysson Silva

@Marlysson

Yes, I will do.

I tested in linux , will test in windows enviroment and report some progress..

EricE

@EricE

Greetings. I have starting to think about some web based projects using Bocadillo as well as async desktop utility type apps that query REST interfaces on the web. I was starting with aiohttp but now that requests-async is out I'm inclined to switch. It looks like Bocadillo is using Starlette to manage requests but I'd like to develop libraries that I can use for both my desktop utilities and Bocadillo. I'm a hardware guy who likes to play with software so this may be an obvious guestion, but if I start working in requests-async, can I drop the code into a Bocadillo project? Or is the interface so similar that I can design it to work with both?

Florimond Manca

@florimondmanca

Hi @EricE! Welcome :) requests-async and Bocadillo are 100% compatible. Requests-async allows to make HTTP requests asynchronously and Bocadillo is asynchronous at its core. So yep, you should be able to drop requests-async code into a Bocadillo project.
From your last sentence I’m not sure I fully understood your question though — feel free to ping back if there’s anything unclear!

Marlysson Silva

@Marlysson

@florimondmanca Great news!!!

I was trying to install again bocadillo and now everything is fine..

I'm able to see version thought bocadillo.version and show 0.13.0.

I ran :

sudo apt-get install python3.6-dev libssl-dev

to be able install bocadillo without errors..

WIll whether is good point out this libs when install it?

Florimond Manca

@florimondmanca

Good stuff @Marlysson! I think we could add this to a troubleshooting section in the FAQ.

Would you mind opening an issue with as many details as you can on the problem and your setup (OS, Python version before/after the fix, any tracebacks, etc)? It would be better than handling this via the chat.

If you know how to use Docker you can try to reproduce the issue in a Linux container, and post the Dockerfile so that we can see how/why this happens. Otherwise I can have a shoot at it myself. :)

Luca Lacerda

@lucawen

Hiii!!

I can create files/folders organization and import in main .py file ?

or anything need to be in the same file ?

like flask

Florimond Manca

@florimondmanca

Hi @lucawen, route registration is indeed Flask-style, so you can register routes anywhere you have access to an app. You can use recipes to separate an app into multiple sub-apps. We also have #234 open for module-based route registration. If that doesn't fit your use case feel free to open a feature request :)

Alfred Chiesa

@alfredchiesa

anyone have examples (or boilerplates) that show a more complete suggested large project structure? There is likely something, but I am having a hard time finding it.

Florimond Manca

@florimondmanca

Hey Alfred, I’m not sure how big of a structure you’re looking for. An example real-life application is TermPair, made by @cs01: https://github.com/cs01/termpair Not sure it qualifies as « large », though. If you think there should be some hints in the docs about this, feel free to open an issue!

By the way everyone, I’ll be on vacation for the next 7 days so might not be able to respond right away. Feel free to help each other out as you can. :-)

Zuhair

@zowhair_twitter

Hi!

How can I clone and built/customize bocadillo locally on my own computer

So that I can contribute

Zuhair

@zowhair_twitter

a problem is that, I have installed python3.6 on my laptop, how to replace it with 3.7?? in ubunut

ubuntu*

Florimond Manca

@florimondmanca

@zowhair_twitter The contributing guide should help you get started :) https://github.com/bocadilloproject/bocadillo/blob/master/CONTRIBUTING.md
As for your question about Python, I’m not an Ubuntu user but I guess you should be able to find an answer by a bit of googling 👍

Zuhair

@zowhair_twitter

@florimondmanca Thanks bro

EricE

@EricE

Thanks for the updated documentation on async. In https://bocadilloproject.github.io/guides/async.html#converting-a-regular-function-to-an-asynchronous-function, if compute is slow, the I assume you would wrap it in run_in_threadpool since wrapping it in an async function doesn't protect you?

Florimond Manca

@florimondmanca

Absolutely @EricE, something like:

async def compute_async(*args, **kwargs):
    return await run_in_threadpool(compute, *args, **kwargs)

Florimond Manca

@florimondmanca

I pushed an update to that section with an additional tip on using partial :)

@alfredchiesa Coming back to your question on larger project structures last time, you may want to check out the new Bocadillo CLI and fiddle around with the create command, it should give you an example of a full-featured project file structure: https://github.com/bocadilloproject/bocadillo-cli
We’re still working towards being able to easily split an app into multiple files :)

^For example via #261

EricE

@EricE

Thanks for the update! For truly CPU bound applications, wouldn't you want to use ProcessPoolExecutor instead of ThreadPoolExecutor (unfortunately not in starlette)? Seems like you would slow down your asyncio app using the ThreadPoolExecutor but have minimal impact with ProcessPoolExecutor. I know it can be more limiting to work with Processes over Threads (pickling) but for maximum speed using ThreadPoolExecutor seems better.

Florimond Manca

@florimondmanca

Yes, I’ve heard that deferring highly CPU-bound operations to a process is more effective in Python. @EricE Maybe you should open a PR to Starlette to add run_in_processpool()? ;)

EricE

@EricE

If I only knew how to use Github :) I just downloaded their desktop app, I'll see if I can figure it out. The hardware guys at my company still use SVN for our FPGA files, etc., and I use it for my Python projects. Our SW guys are switching to Git and it is clearly the winner so time to switch...

Florimond Manca

@florimondmanca

Ah right, you’re into hardware! This website helped me a lot when starting with git two years ago :) http://rogerdudler.github.io/git-guide/

Ilyes Bouchlaghem

@Ibouch

Hi ! I am reading about ASGI servers more precisely on Uvicorn and a framework using it (Starlette.io). It turns out that in their section 'Third Party Packages' they quote you with another framework (FastAPI), so Bocadillo is a framework of another framework? Would not this add unnecessary overlays rather than contribute directly to the Starlette.io project?
Anyway good job, there are features that look cool

Florimond Manca

@florimondmanca

Hi Ilyes! Thanks for pitching in, this is an interesting question!

Actually, Bocadillo uses Starlette as an ASGI toolkit, not as a framework. For example, we reuse Starlette’s HTTP request representation (the Request class), as well as various ASGI middleware classes (eg the CORS middleware) and some other features (eg background tasks). But Bocadillo has a different design for views, and other features completely separate from Starlette (eg dependency injection). This hasn’t happened yet, but I’d be very much keen to bring generic enough features back into Starlette (in fact, I am personally a contributor to Starlette and uvicorn). :)

OTOH, it is true that FastAPI can be seen as a framework of a framework. For example, its app class is a direct subclass of ‘Starlette’ class. I think tiangolo is involved in both Starlette and uvicorn as well though.

Ilyes Bouchlaghem

@Ibouch

Ok thank you for the precision, in the description of your project, would you know what 'asynchronous salsa` means?

Florimond Manca

@florimondmanca

Bocadillo means sandwich in Spanish, and salsa means sauce, so it’s just a pun for the fact that Bocadillo is an async framework :)

Oh also there’s a section in the FAQ about this: https://bocadilloproject.github.io/faq.html#why-bocadillo-and-how-do-you-pronounce-it

Ilyes Bouchlaghem

@Ibouch

hm ok, because I had found on the internet "Salsa: A Framework for Scalable Asynchronous Replica Exchange"

but it did not make sense

Florimond Manca

@florimondmanca

Oh, right. Yeah, Bocadillo has nothing to do with this paper. 😅 I can see that’s what I get as a second result when googling for “asynchronous salsa” as well.

Ilyes Bouchlaghem

@Ibouch

I chose to use starlette.io, but I may reconsider my choice if I realize that bocadillo saves me development time and does not affect performance. This is for a web application of a large community and the current version under Flask (and Flask-SocketIO for websocket), does not support the load.
If I use bocadillo, I will mention to my community (video games so also some devs) to increase the visibility of your project!

Florimond Manca

@florimondmanca

Sounds good! Good luck with your project 👍

Ilyes Bouchlaghem

@Ibouch

Thank you :)

EricE

@EricE

I'm wondering is something is off with the demo file structure? I ran bocadillo create demo and got

+---demo
¦   +---demo
¦   ¦   +---app.py
¦   ¦   +---asgi.py
¦   ¦   +---providerconf.py
¦   ¦   +---settings.py
¦   ¦   +---__init__.py
¦   +---templates

(I added templates). From the tutorial it seems like templates should be in the same subdirectory as app.py but jinja2 throws an error if it is

https://bocadilloproject.github.io/guides/agnostic/templates.html#how-templates-are-discovered

I run uvicorn demo.asgi:app --reload in the first demo subdirectory

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