[alsko]

Wow, I feel _really_ dumb now - I just saw the filename without ".py" and assumed it was an executable

Sorry, I take it back!

[OJFord]

It's sort of just pedantry because I know what you mean, but FYI it is an executable when you mark it (chmod +x) as such; what you mean to say is that you assumed it was a binary, the output of a compiler, with the input (source) not provided.