Why Python Is Slow: Looking Under the Hood

Re:Why Python Is Slow: Looking Under the Hood by adamtj on Tuesday November 18, 2014 @05:19PM (#8626753)

How is python substantially different from javascript in this case? Google has a crazy fast javascript JIT compiler, even though javascript has something equivalent to python's setattr().

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Re:Why Python Is Slow: Looking Under the Hood by masklinn on Tuesday November 18, 2014 @05:44PM (#8626874)

> even though javascript has something equivalent to python's setattr().

Python provides significantly more hooks into the behaviour of arbitrary objects, and arguably provides more flexibility than JS.

Here are a few notes from Mike Pall (LuaJIT) on Python features making a straight interpreter slower, and the language harder to optimise (JIT tightly): http://lua-users.org/lists/lua-l/2004-11/msg00083.html

Animats is full of shit, the ability to add arbitrary "static" attributes to existing objects is really not the main problem.

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