Created
January 25, 2013 04:40
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Slice indices for generating array chunks.
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| def chunk(n, nchunks): | |
| """Return a list of slices that divide an array into approximately nparts.""" | |
| d = n / nchunks | |
| r = n - nchunks * d | |
| indices = range(0,(d+1)*r,d+1) + range((d+1)*r, n+d, d) | |
| indices[-1] = None | |
| a,b = tee(indices) | |
| next(b,None) | |
| return izip(a,b) |
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