[issue16965] 2to3 should rewrite execfile() to open in 'rb' mode

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

`exec(compile(open("fn", "rb").read(), "fn", 'exec'))` will emit a resource warning because the open file is not closed explicitly.

But this is a different issue.

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue16965>
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