[issue23731] Implement PEP 488

[Steve Dower]

Steve Dower added the comment:

I don't actually see any essential changes. The bdist_wininst and bdist_msi changes are just for usage help, and presumably they'll go from "do not compile .py to .pyo (optimized)" to "do not compile .py to optimized .pyc".

I'd prefer to leave the .pyo file association in the installer, since it will affect previous installations.

The only change I see in PC/ is PC/getpathp.c, which is just removing a condition on "o" vs "c", and I don't see anything in PCBuild/ that really needs fixing. (Removing the cleanup code is unnecessary and leaving it in may help make sure the buildbots clean up any old .pyo files after we stop creating them.)

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<http://bugs.python.org/issue23731>
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