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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import absolute_import
from copy import copy
class ChunkingError(Exception):
pass
def getChunk(things, chunks, thisChunk):
if thisChunk > chunks:
raise ChunkingError(
"thisChunk (%d) is greater than total chunks (%d)" % (thisChunk, chunks)
)
possibleThings = copy(things)
nThings = len(possibleThings)
for c in range(1, chunks + 1):
n = nThings // chunks
# If our things aren't evenly divisible by the number of chunks
# we need to append one more onto some of them
if c <= (nThings % chunks):
n += 1
if c == thisChunk:
return possibleThings[0:n]
del possibleThings[0:n]