Yes, that is Fibonacci. The program finds the sum of all the even Fibonacci numbers less than 4 million. As for more examples, I will certainly add in the future.
The 「」was a design choice that I made so that I can more easily code the translator to differentiate between variables and other names (e.g. functions), with the side benefit of making the code slightly more readable. Spaces I bet can certainly achieve the same level of readability, but would require more complex code. I'll think about implementing that, however.
It's strange that you need to separate functions and other variables. I mostly use Racket, but I'm using Python from time to time. I'm using some code like
def something(N, x):
f, g, h = method_1(N)
#f, g, h = method_2(N)
#f, g, h = method_3(N)
return f(x) + g(x) + h(x)
The 「」was a design choice that I made so that I can more easily code the translator to differentiate between variables and other names (e.g. functions), with the side benefit of making the code slightly more readable. Spaces I bet can certainly achieve the same level of readability, but would require more complex code. I'll think about implementing that, however.