On 2017-07-09 15:08, Bhavishya wrote:
Hello,
1).I was going through the code of *python pickle* to search any
optimization possibility.But the only thing that I found very alarming
was again the import time(I tried with lazy-import but it didn't helped
much.)
I found py3 to be ~45 times slower on*initial imports(very raw
measure..using "time." ) *as compared to py2 on an usual example.
py3->
./python -c '
favorite_color = { "lion": "yellow", "kitty": "red" }
pickle.dump( favorite_color, open( "save.p", "wb" ) )'
0.009715557098388672(time taken to do initial imports...measured using
*time.time()* )
py2->
./python -c '
favorite_color = { "lion": "yellow", "kitty": "red" }
pickle.dump( favorite_color, open( "save.p", "wb" ) )'
0.000236034393311(time taken to do initial imports...measured using
*time.time()* )
Do you have any thought/ideas on improving this?
Python 3 is using Unicode strings, whereas Python 2 is using bytestrings.
What you show above are very short (in time) examples (less than 1/100
of a second), so they're not that meaningful.
If you had timed pickling a substantial object (the same object in both
cases) and it took a significant amount of time and you found a
significant slowdown, then it would be worth looking into further.
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