Include individual PHP code in posts with or without plugin

Hi there,

on my older site I was using the Insert PHP plugin which helps me to display individual PHP code in blog posts. For this I have a function in my functions.php:

function pythonPage($key, $defaultVersion="couple", $indi=True)
{
    $version = isset($_GET['version']) ? $_GET['version'] : $defaultVersion;
    $url = "https://packlisten.pythonanywhere.com/page/".$key."/".$version;
	if ($indi)
		$url .= "/indi";
	$success = include $url;
	if (!$success) {
	  header('Location: https://www.packlisten.org/wartungsarbeiten/');
	  exit;
	}
}

With the help of the plugin I call the function like this:

[insert_php]
pythonPage("Wochenendausflug");
[/insert_php]

I tried it on a separate installation with Generatepress and it works. My question is: Could I avoid this plugin and a child theme and instead get the same result with your Elements module?

Thanks in advance!

Best regards
Jasmin