Python all the way. I used to use PHP heavily but after picking up python and building quite a few web based applications with it, I use it for everything now. You can build desktop applications, web applications, command line scripts etc., all with the same programming language. (yes you can do command line ith php etc too, but its just not the same
)
I still support and manage a lot of PHP apps that I have written over the years, but Python is definitely the only way I will go in the future.