I've been reading a bit about functional programming recently and am keen to get have a bit of a play. are there any decent scripting languages that support functional programming? I find that the bulk of my ad-hoc programming is done in Python, so I thought I might be able to do the same with a functional language. Any recommendations?
Lua appears to fit your needs:
Lua (pronounced /ˈluː.ə/ LOO-uh) is a lightweight, reflective, imperative and functional programming language, designed as a scripting language with extensible semantics as a primary goal.