I have created (with some help) this pi generator and wondered if it is fully functional and will continue to work without breaking. it runs in Python3.2
a, b = 0, 1
while 1:
a = a + (4/b)
b = b + 2
a = a - (4/b)
b = b + 2
print(str(a))
Simply put, yes.
Long answer, it will work for all versions of python 3.x