Simple PyScript HTML file doesn't work

Python
1

I am trying to learn PyScript as it it discussed Here about PyScript, and my simle Hello World script that I got from there fails to work, either as an HTML on my web server or called directly via browser from the file explorer.

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Title: PyScript</title>
	<script defer src="https://pyscript.net/alpha/pyscript.js"></script>
</head>
<body>
    <py-script> print("Hello, World!") </py-script>
</body>
</html>

I know how to run Python scripts via command line with no problem, but that’s as far as I can go right now without a framework and an application server platform.

Any ideas? Thanks

2

Article might be a bit old or out of date, it’s from 2022. I could not get this to work either.

I found another example from the website linked in the article, it’s totally different:
https://pyscript.com/@examples/pyscript-jokes/latest?files=README.md,index.html

Maybe you can follow this guide it seems to be from 2025:
https://docs.pyscript.net/2025.3.1/beginning-pyscript/

3

I signed up for PyScript and created my own sandbox project. It consisted of index.html, main.py, and pyscript.toml. I copied the files to my /cma folder locally, changed pyscript.toml to pyscript.json, reconfigured it, and then deployed to the webroot for IIS to take a run of it. Going to index.html on localhost/cma doesn’t throw any errors at all, but it also doesn’t display anything, but that, for me, is progress

index.html:

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Hello World</title>

    <!-- Recommended meta tags -->
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">

    <!-- PyScript CSS -->
    <link rel="stylesheet" href="core.css">

    <!-- This script tag bootstraps PyScript -->
    <script type="module" src="core.js"></script>
</head>
<body>
    <script type="py" src="./scripts/main.py" config="./scripts/pyscript.json"></script>
</body>
</html>

main.py:

from cma import app
from flask import Flask

print("Content-type: text/html")
print("Hello World!")

pyscript.json:

{
	"name": "Hello World",
	"packages": ["wfastcgi", "flask"],
	"appSettings": {
			"PYTHONPATH": "C:\inetpub\wwwroot\cma",
			"WSGI_HANDLER": "cma.app"
                       },
	"system.webServer": {
				"handlers": {
						"name": "PythonHandler",
						"path": "*",
						"verb": "*",
						"modules": "FastCgiModule",
						"scriptProcessor": "C:\Python313\python.exe|C:\Python313\Scripts\wfastcgi.py",
						"resourceType": "Unspecified",
						"requireAccess": "Script"
					    }
			    }
}