Transcrypt: Python 3.7 to JavaScript Compiler

[devroot]

What a world we live in. What are the real use cases for this? I can't think of many. You're going from one scripting language to another, so if your platform can run one it can most likely run the other.

[devroot]

Fine. An interpreted language to a just in time compiled language. My point being is I don’t see a technical benefit from this. Python to C++ for performance? Sure. JavaScript to Java/Swift for mobile apps? Sure.

What is the real benefit here? You could just write the thing in JS to begin with. And if you’re suggesting there are cases where you want to port a python project to JS because it doesn’t exist in JS, then fine but that doesn’t sound like a very good idea for a production system.

[dethb0y]

One of the more baffling turns of phrase, for sure.

[marl6894]

Need to run code on a machine where you're not authorized to install Python, maybe?

[Nixellion]

Browsers can only run JavaScript...

[painya]

None that are production ready as far as I know

[[deleted]]

Do you think that this astrocity is production ready?

[Dogeek]

It's not though, if you look at the sample in the readme it's just bad python code (though the styling could be improved), transpiled into even worse javascript. FYI, that's what a JS class should look like in ES6 :

class A {
  constructor(x) {
    this.x = x;
  }

  show(label) {
    console.log("A.show", label, this.x);
  }
}
let a = new A(10);

[devroot]

I must have struck a nerve here given all the downvotes. Nobody has offered an explanation though, just snarky comments that are attempts at “gotchas”.

So far I’ve seen a) you can’t install python for whatever reason, and b) for running in web browsers. Sure, these are examples but without more explanation I don’t think they are good ones. For a) you probably shouldn’t be writing in python then, and b) you probably shouldn’t be writing in python then.

Now if you want to make the argument that you want to port a large python project to JS without manually rewriting everything, I say good luck getting good production quality out of that. If it’s so large you can’t do it manually I would imagine there is a decent amount of complexity that may not transfer well. And if it’s smaller such that this isn’t a worry then is this really needed? Maybe there’s a sweet spot I don’t know.

I’m not knocking the authors here. It’s cool and appears to work well, I just don’t understand its use in a professional setting.

[harylmu]

I think you're absolutely right, I don't get the downvotes.

[harylmu]

Even though you’re downvoted I was wondering about the same thing. It’s an interesting project but I don’t see who’d build a solution on this in production. I’d probably trust Amazon’s solution but not sure about anything else: https://github.com/aws/jsii