21.02.20 10:36, Steven D'Aprano пише:
On my machine, at least, constructing a bytes object first followed by an array is significantly faster than the alternative:[steve@ando cpython]$ ./python -m timeit -s "from array import array" "array('i', bytes(500000))" 100 loops, best of 5: 1.71 msec per loop [steve@ando cpython]$ ./python -m timeit -s "from array import array" "array('i', [0])*500000" 50 loops, best of 5: 7.48 msec per loop That surprises me and I cannot explain it.
The second one allocates and copies 4 times more memory. _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/STQPZQEI6TMJAIZZXZ3PZPQJQ3OJHIT4/ Code of Conduct: http://python.org/psf/codeofconduct/
