Armin Rigo <ar...@users.sourceforge.net> added the comment:

> But this seems to me like a contrived example: how often in real
> code do people pass around these builtins, rather than calling
> them directly?

>From experience developing PyPy, every argument that goes "this theoretically 
>breaks obscure code, but who writes it in that way?" is inherently broken: 
>there *is* code out there that uses any and all Python strangenesses.  The 
>only trade-offs you can make is in how much existing code you are going to 
>break -- or make absolutely sure that you don't change semantics in any case.

----------
nosy: +arigo

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue10399>
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