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Improve speed. Reduce auxiliary memory to 16.6% of the main array. #98294

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Merged
merged 3 commits into from
Oct 15, 2022
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Improve speed. Reduce auxiliary memory to 16.6% of the main array. #98294

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36ea21d
Improve speed. Reduce auxiliary memory load to 16.6% of the main array.
rhettinger Oct 15, 2022
de5fc2f
Merge branch 'main' into sieve_faster_smaller
rhettinger Oct 15, 2022
ec05c8a
Zeros array is immutable
rhettinger Oct 15, 2022
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Zeros array is immutable
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@rhettinger
rhettinger committed Oct 15, 2022
commit ec05c8a4e79460308a643ebe206d8556044c6895
2 changes: 1 addition & 1 deletion Doc/library/itertools.rst
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Expand Up @@ -826,7 +826,7 @@ which incur interpreter overhead.
data[:3] = 0, 0, 0
limit = math.isqrt(n) + 1
for p in compress(range(limit), data):
data[p*p : n : p+p] = bytearray(len(range(p*p, n, p+p)))
data[p*p : n : p+p] = bytes(len(range(p*p, n, p+p)))
data[2] = 1
return iter_index(data, 1) if n > 2 else iter([])

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