[issue2356] sys.exitfunc should raise a Py3K warning

[Benjamin Peterson]

Benjamin Peterson <musiccomposition at gmail.com> added the comment:

On Thu, Aug 21, 2008 at 1:21 PM, Brett Cannon <report at bugs.python.org> wrote:
>
> So for every sys import you are going to add an "import atexit"? That
> doesn't seem reasonable. And if the call is in an expression context
> you definitely cannot add the import.

You're right; it's not going to be perfect, but 2to3 could warn when
it couldn't insert the import statement.
>
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> <http://bugs.python.org/issue2356>
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