Emanuel Barry added the comment:

*.pyo files have been removed from the language as of 3.5; instead, the 
optimization is done directly to the *.pyc files. Are you suggesting 
re-introducing *.pyo files or changing this behaviour in the current model?

Also, 'if type(obj) is int' is *not* the same as 'if isinstance(obj, int)' -- 
the first one checks explicitely that 'obj' is an int. The second allows for 
any arbitrary subclass of int; most people using the first idiom want ints 
specifically, disallowing subclasses.

What other optimizations do you have in mind?

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nosy: +ebarry

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue25903>
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