I am writing an application for Android 2.3.5 (that will also be compatible with iOS). I wish to transfer data from the app\'s HTML/Javascript to a Python program on a serve
This looks like your browser cannot find the socket.io.js file. You could try opening the index.html on your computer with Firefox+Firebug or the Chrome Web Developer Tools and look at how the .js file is requested. On the other side, you could check the logs on the webserver serving the .js file whether there are any file not found errors.
The require function would be provided by e.g. RequireJS, but you would still need to configure the paths to your scripts correctly for it to work.