Is rewriting a PHP app into Python a productive step?
I did a conversion between a PHP site and a Turbogears(Python) site for my company.  The initial reason for doing so was two fold, first so a redesign would be easier and second that features could be easily added.  It did take a while to get the full conversion done, but what we end up with was a very flexible back end and an even more flexible and readable front end.  We've added several features that would have been very hard in PHP and we are currently doing a complete overhaul of the front end, which is turning out to be very easy.
In short it's something I would recommend, and my boss would probably say the same thing.  Some people here are making good points though.  Python isn't as fast as what PHP can give you, but what it lacks in performance it more then makes up for in versatility.
I have some old apps written in PHP that I'm thinking of converting to Python - both are websites that started as simple static html, then progressed to PHP and now include blogs with admin areas, rss etc. I'm thinking of rewriting them in Python to improve maintainability as well as to take advantage of my increase in experience to write things more robustly.
Is this worth the effort?