[Python-Dev] importlib quest (original) (raw)
Antoine Pitrou solipsis at pitrou.net
Mon Feb 6 20:49:48 CET 2012
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On Mon, 6 Feb 2012 09:57:56 -0500 Brett Cannon <brett at python.org> wrote:
Thanks for any help people can provide me on this now 5 year quest to get this work finished.
Do you have any plan to solve the performance issue?
$ ./python -m timeit -s "import sys; mod='struct'"
"import(mod); del sys.modules[mod]"
10000 loops, best of 3: 75.3 usec per loop
$ ./python -m timeit -s "import sys; mod='struct'; from importlib import import"
"import(mod); del sys.modules[mod]"
1000 loops, best of 3: 421 usec per loop
Startup time is already much worse in 3.3 than in 2.7. With such a slowdown in importing fresh modules, applications using many batteries (third-party or not) will be heavily impacted.
Regards
Antoine.
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