[MAL] > Wait... the -U option was added in order to be able to see how well > the 8-bit string / Unicode integration works. It's a know fact that > the Python standard lib is not Unicode compatible yet and that's > exactly what the -U option allows you to test (in a very simple > way). I don't object to testing hacks provided they don't trip up the innocent; it would help to remove -U from the user-visible docs (which I'll do). Note that, by coincidence, Andreas Jung (at Zope Corp) pissed away time worrying about -U breakage yesterday independent of our thread here: it's doing harm. If you're the only one who tries -U on purpose (anyone? it's clear that I don't ...), it would be better done via a preprocessor define. How often is this used even by you? If it's once per release just to make sure it's still broken <wink>, a variant build wouldn't be a real burden. > ... > The -U option is currently the only application of such a flag. > We will definitely have a need for these options in the future > to make the runtime aware of certain assumptions which have been > made in the compiled byte code, e.g. byte code using special > opcodes, byte code compiled for a different Python virtual > machine (once we get pluggable Python compiler / VM combos), > byte code which was compiled using special literal > interpretations (such as in the -U case or when compiling > the source code with a different source code encoding > assumption). There remains no current use for any of these things. When a real use appears, "magic number" abuse won't be appropriate: imp.get_magic() doesn't return a vector; we're not doing the Unixish /etc/magic database any favors by *ever* changing it; and needing to register umpteen distinct magic numbers per release for Linux binfmt would make Python even more irritating to live with there. > I would be more than happy to get rid off the current PYC magic hack > for -U and have it replaced with a better and extensible alternative, > e.g. a combination of PYC version number and marhsalled option > dictionary. I agree, except that I still think having -U now is a net loss.
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