[Python-Dev] peps: Update PEP 399 to include comments from python-dev. (original) (raw)
James Y Knight foom at fuhm.net
Wed Apr 13 04:34:40 CEST 2011
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On Apr 12, 2011, at 7:50 PM, Tres Seaver wrote:
Trying to accelerate existing code which doesn't have the coverage is insane: how can you know that the accelerator doesn't subtly change the semantics without tests?
But even if you do have 100% python source code branch coverage, that's not nearly enough. There are thousands of branches inside the python interpreter, which you also need to have full coverage on to really ensure that the behavior of the code does not subtly change.
Good luck with that.
James
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