It is confusing if you don't know the difference between a page templating language and a web framework. If ease of writing "hello world" is what matters, Python:

    print "hello world"

beats PHP:

    <?php echo "hello world" ?>

You can do this in Python too, if you wanted to:

http://modpython.org/live/mod_python-3.3.1/doc-html/pyapi-ps...

But it's not a very good architecture, in the meanwhile we had better approaches, such as MVC and MVVM.

Anyway, CS is not web programming, but should focus on the fundamentals of computer science, for which there are far better languages than PHP.