HTML file that opens Pythonista, where a specified script is executed, while the browser window closes in the background. This serves as workaround for IFTTT's lack of support for custom URL schemes in the URL parameter of Pushover's Channel.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="refresh" content="0; pythonista://foo.py&action=run&argv=bar"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script language="JavaScript">
setTimeout("self.close()", 500);
</script>
</head>
<body>
Redirecting to Pythonista…
</body>
</html>