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gh-129813, PEP 782: Use PyBytesWriter in ssl.MemoryBIO - #139113
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vstinner merged 1 commit intoSep 18, 2025
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Replace PyBytes_FromStringAndSize(NULL, size) and _PyBytes_Resize() with the new public PyBytesWriter API.
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Benchmark: import ssl
import pyperf
bio = ssl.MemoryBIO()
def bench(size):
bio.write(b'x' * size)
data = bio.read(size)
if len(data) != size:
raise Exception
runner = pyperf.Runner()
for size in (1, 10, 100, 1_000, 10_000):
runner.bench_func(f'read {size:,}B', bench, size)Result:
Benchmark hidden because not significant (1): read 10,000B |
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Replace PyBytes_FromStringAndSize(NULL, size) and _PyBytes_Resize() with the new public PyBytesWriter API.