ZeroDivisionError: float division by zero with kmpp initialiser

[rtrad89]

When using kmpp initialisation, chances vector keeps decreasing till the point at which the following code line:

chances = [x/sum(chances) for x in chances]

produces a ZeroDivisionError error because sum(chances) == 0, and execution is broken.

In my case, the following chances and sum(chances) values where computed across iterations:

> [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] 20
> [0.0, 0.0, 0.0, 0.0, 0.0, 0.7805784783006152, 0.0, 0.0, 0.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0518003539299652, 0.0, 0.0, 1.367544467966324, 0.0, 0.0] 5.199923300196905
> [0.0, 0.0, 0.0, 0.0, 0.0, 0.7805784783006152, 0.0, 0.0, 0.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0518003539299652, 0.0, 0.0, 0.0, 0.0, 0.0] 3.8323788322305807
> [0.0, 0.0, 0.0, 0.0, 0.0, 0.7805784783006152, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.23905780015564948, 0.0, 0.0, 0.0, 0.0, 0.0] 1.0196362784562647
> [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.23905780015564948, 0.0, 0.0, 0.0, 0.0, 0.0] 0.23905780015564948
> [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] 0.0

As it is seeable, sum(chances) plummits to 0.0 at the end.

[ForeverZyh]

Same issue