Traversing through variable-sized lists

[Matt McCredie]

> I've tried the following workaround, but it often gives me inaccurate
> results (due to integer division), so I had to add a safety check: 
>
> num_frames = 32
> values = [0, 1, 2, 3, 4]
> offset_step = num_frames / len(values)
>     for index in xrange(0, num_frames):
>         offset = index / offset_step
>         if offset > offset_values[-1]:
>             offset = offset_values[-1]
>         frames[index].func(values[offset])
> 
> There has to be a better way to do this. I'd appreciate any help.
> Cheers!
> 

This is how I would do it, assuming you just want to call the remaining frames 
with the last value.

from itertools import izip

def stretch(seq, n):
    for val in seq:
        for i in xrange(n):
            yield val
    while True:
        yield val

frames_per_value = num_frames // len(values)
for frame, value in izip(frames, stretch(values, frames_per_value)):
    frame.func(value)


Matt