"Don't rebind built-in names*" - it confuses readers

[Chris Angelico]

int="five"
[__builtins__.int(i) for i in ["1","2","3"]]

Don't use __builtins__, it's an implementation detail.

In Python 2.x, there is __builtins__ with an "s" in the global namespace
if you are running CPython, but not necessarily other implementations.
There is __builtin__ with no "s" which is defined by the language, but
you have to import it first.

In Python 3.x, you just import builtins with an "s" and no underscores,
no matter what implementation you use.

Oh, sorry, my bad. I tend to just whip something up in IDLE and see if
it works, rather than actually check the spec. Listen to Steven, he
knows what he's about!

ChrisA