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PyScript: Run Python in your HTML

pyscript.net

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Re: PyScript: Run Python in your HTML

#51

Post by firechickenbird »

BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

It makes no sense to me also. One of the reasons Python so popular is due to it's interoperability with libraries written in C/C++, otherwise it's just super slow language. In the browser you can't access these fast libraries so you are left with a crap language with an even slower execution due to the interpreter VM written in JS

Re: PyScript: Run Python in your HTML

#52

Post by manjana »

eatonphil wrote: post #29

This uses Pyodide [0] under the hood [1], which is CPython compiled to WebAssembly. In all my tests of it, loading takes a long time ~5 seconds. Coldbrew [2], another distribution of CPython on Wasm, is another option with similar load times. And Brython [3] is a completely different option without long load time: a Python interpreter implemented in JavaScript. If load time is important, Brython is pretty nice. If fe…

That 5 second loading time only happends once though.

Re: PyScript: Run Python in your HTML

#53

Post by _pdp_ »

Python is the worst language to script anything inside a markup language that does not need to be structured like Python (HTML). So yeah, a good experiment, but unfortunately it is doomed to fail.

Re: PyScript: Run Python in your HTML

#55

Post by theptip »

BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

If you already have a lot of domain logic in Python for your backend, that would make it easier to write a frontend living in the same codebase. (For example, imagine a framework for autogenerating forms for your Django models; this already exists server-side, but native client-side Python would give you more options. And if your framework owns both the client and server, it could autogenerate the API so you don’t even need to write one for happy-path usecases.)

If you are already using Python on the backend, not having to hire/train a completely different skill set/stack is appealing. Sure, the browser and CSS/HTML specialism is going to remain, but not having to split your team by JS vs would make it much easier for a team to collaborate and share work.

I think Python in the browser only has to be “almost as good” in a direct comparison for it to actually win out as the best choice organizationally for many teams.

Re: PyScript: Run Python in your HTML

#56

Post by lstmemery »

BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

I think it's primarily meant as a learning tool. Here's the TL;DR from their GitHub.[1]

PyScript is a Pythonic alternative to Scratch, JSFiddle or other "easy to use" programming frameworks, making the web a friendly, hackable, place where anyone can author interesting and interactive applications.

https://github.com/pyscript/pyscript

Re: PyScript: Run Python in your HTML

#57

Post by BossingAround »

theptip wrote: post #55
BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

If you already have a lot of domain logic in Python for your backend, that would make it easier to write a frontend living in the same codebase. (For example, imagine a framework for autogenerating forms for your Django models; this already exists server-side, but native client-side Python would give you more options. And if your framework owns both the client and server, it could autogenerate the API so you don’t ev…

I'd say that there's less knowledge shared between Python frontend and Python backend than between Python and JavaScript frontends. Outside of syntax and ecosystem, I wouldn't think there's much shared between Python backend and frontend.

Re: PyScript: Run Python in your HTML

#58

Post by BossingAround »

lstmemery wrote: post #56
BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

I think it's primarily meant as a learning tool. Here's the TL;DR from their GitHub.[1] PyScript is a Pythonic alternative to Scratch, JSFiddle or other "easy to use" programming frameworks, making the web a friendly, hackable, place where anyone can author interesting and interactive applications. https://github.com/pyscript/pyscript

Ah that makes sense, I didn't think of that. Thank you.

Re: PyScript: Run Python in your HTML

#59

Post by stavros »

eatonphil wrote: post #29

This uses Pyodide [0] under the hood [1], which is CPython compiled to WebAssembly. In all my tests of it, loading takes a long time ~5 seconds. Coldbrew [2], another distribution of CPython on Wasm, is another option with similar load times. And Brython [3] is a completely different option without long load time: a Python interpreter implemented in JavaScript. If load time is important, Brython is pretty nice. If fe…

Transcrypt looks pretty great for my purposes, thank you!

Re: PyScript: Run Python in your HTML

#60

Post by ltdanimal »

firechickenbird wrote: post #51
BossingAround wrote: post #50

Based on the responses, I assume this is a silly question, but why? Why would I want to run Python in HTML? Does Python have some libraries that JS is missing? (I could think of AI/ML libs) The examples [1] seem so slow in my browser (Firefox on an Intel-based MBP) that they are borderline unusable for me (and some of them just straight out don't load within 60 seconds, like the Bokeh, at which point I give up). [1]…

It makes no sense to me also. One of the reasons Python so popular is due to it's interoperability with libraries written in C/C++, otherwise it's just super slow language. In the browser you can't access these fast libraries so you are left with a crap language with an even slower execution due to the interpreter VM written in JS

There are a huge number of people who would disagree with Python being a "crap" language, and the irony is that the only language supported in the browser is js. You're missing a big reason Python is popular, and it is another reason this is a big deal. The number of people that have an opportunity to make web apps opens a great deal.

Also the idea is you CAN now access those libraries like numpy, even though Python speed in general is usually overstated.

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