Serhiy Storchaka added the comment:
Well.
./python -m compileall $(find Lib -type f -name '*.py')
./python -O -m compileall $(find Lib -type f -name '*.py')
Tests:
FILES="$(find Lib -name '*.py' -o -name '*.py[co]')"
time 7z a -tzip -mx=0 python-0.zip $FILES >/dev/null
time 7z a -tzip python.zip $FILES >/dev/null
time 7z a -tzip -mx=9 python-9.zip $FILES >/dev/null
time 7z a -tzip -mm=bzip2 python-bzip2.zip $FILES >/dev/null
time 7z a -tzip -mm=bzip2 -mx=9 python-bzip2-9.zip $FILES >/dev/null
time 7z a -tzip -mm=lzma python-lzma.zip $FILES >/dev/null
time 7z a -tzip -mm=lzma -mx=9 python-lzma-9.zip $FILES >/dev/null
time 7z t python-0.zip >/dev/null
time 7z t python.zip >/dev/null
time 7z t python-9.zip >/dev/null
time 7z t python-bzip2.zip >/dev/null
time 7z t python-bzip2-9.zip >/dev/null
time 7z t python-lzma.zip >/dev/null
time 7z t python-lzma-9.zip >/dev/null
wc -c python*.zip
Results:
pack unpack size
time time (MB)
store 1.6 0.5 65.4
deflate 19 0.9 17.5
deflate-max 134 0.9 17.2
bzip2 21 4.2 16.5
bzip2-max 294 4.1 16.3
lzma 120 2.3 15.9
lzma-max 204 2.3 15.8
All numbers are about 3x larger. lzma-max is 8% less than deflate-max but 2.5
times slower. Bzip2 is out of the game.
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<http://bugs.python.org/issue17004>
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