Fuck. I hate dealing with this stuff. Apparently wxPython has issues with Snow Leopard since it’s written in Carbon and that’s not 64 bit but the default python installed on Macs expects 64 bit and blah blah blah die. This command in the terminal will fix it if you’re having trouble getting wxPython running on Snow Leopard:
defaults write com.apple.versioner.python Prefer-32-Bit -bool yes
You’re welcome!
(found here)