My current web host allows for up to 25 processes running at once. From what I can figure, Python scripts take up a spot in processes, but PHP doesn't? 
I get a 500 error if more than 25 processes are running at once (unlikely, but still a hassle), so I was wondering if it would be easier on the server if I were to port my site over to PHP?
Thanks!
You are using HostGator. Switch hosts. Their shared server offerings should be used by very low traffic, brochure sites as they cram 100's of vhosts onto each server.
If you can't switch, ensure you're setup to use mod_php (not suPHP or cgi) or Python equivalent. Otherwise, new processes will be spawned on each request and you'll be serving up blank pages in no time.
What's more resource intensive? PHP or Python?