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Author vstinner
Recipients belopolsky, ezio.melotti, georg.brandl, lemburg, moese, phr, vstinner
Date 2011-05-11.19:47:54
SpamBayes Score 2.78951e-05
Marked as misclassified No
Message-id <>
a) ./python -m timeit "(b'\xc3\xa9' * 10000).decode('utf-8')"
b)./python -m timeit "(''.join( map(chr, range(0, 128)) )*1000).encode('utf-8')"
c) ./python -m timeit "f=open('Misc/ACKS', encoding='utf-8');; f.close()" "acks.encode('utf-8')"
d) ./python -m timeit "f=open('Misc/ACKS', 'rb');; f.close()" "acks.decode('utf-8')"

Original -> patched (smallest value of 3 runs):
a) 85.8 usec -> 83.4 usec (-2.8%)
b) 548 usec -> 688 usec  (+25.5%)
c) 132 usec -> 144 usec (+9%)
d) 65.9 usec -> 67.3 usec (+2.1%)

Oh, decode 2 bytes sequences are faster with my patch. Strange :-)

But 25% slower to encode a pure ASCII text is not a good news.
Date User Action Args
2011-05-11 19:48:54vstinnersetrecipients: + vstinner, lemburg, georg.brandl, phr, belopolsky, moese, ezio.melotti
2011-05-11 19:48:54vstinnersetmessageid: <>
2011-05-11 19:47:54vstinnerlinkissue2857 messages
2011-05-11 19:47:54vstinnercreate