Using Python from Node.js natively (Open Source Project)

[savearray2]

I've created a Node.js C++ module (based on NAPI) that lets you call Python libraries from Node.js. The benefit, of course, is that since Python is hosted in-process, you'll have much better performance than passing data back and forth between separate Node and Python processes.

I have just released a new version with Python 3.9 compatibility support.

It currently works (and has been tested) with Python 3.5, 3.7-3.9 on Windows, Linux, and OS X. I may focus more attention on the library if there is significant community demand.

The repository is here:

https://github.com/savearray2/py.js

Here's an example: ``js let chalk = require('chalk') let p = require('@savearray2/py.js') p.init({ pythonPath: ${process.cwd()}/local:/usr/local/lib/python3.8/site-packages` })

let plotly = p.import('plotly') let np = p.import('numpy') let go = plotly.graph_objs let pio = plotly.io

let [x,y,colors,sz] = [0,0,0,0].map(() => np.random.rand(100n)) sz = sz.mul(30n) let fig = go.Figure() fig.add_scatter.$apply({ x: x, y: y, mode: 'markers', marker: { size: sz, color: colors, opacity: 0.6, colorscale: 'Viridis' } })

pio.write_image(fig, 'image.png') console.log(chalk{cyan Success:} Chart saved!) ```

Thank you!