[Python-Dev] PEP 552: deterministic pycs (original) (raw)
Antoine Pitrou solipsis at pitrou.net
Fri Sep 8 06:04:52 EDT 2017
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On Thu, 7 Sep 2017 18:47:20 -0700 Nick Coghlan <ncoghlan at gmail.com> wrote:
However, I do wonder whether we could encode all the mode settings into the magic number, such that we did something like reserving the top 3 bits for format flags:
* number & 0x1FFF -> the traditional magic number * number & 0x8000 -> timestamp or hash? * number & 0x4000 -> checked or not? * number & 0x2000 -> reserved for future format changes
I'd rather a single magic number and a separate bitfield that tells what the header encodes exactly. We don't have to fight for a tiny size reduction of pyc files.
Regards
Antoine.
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