At 12:16 AM 7/25/2007 +1000, Nick Coghlan wrote:
>I've changed the behaviour in r56520 to simply leave the alterations to
>sys in place when the function terminates. While this is a definite
>change to the interface (and hence not a candidate for direct
>backporting), I think the difference is small enough for the 2.5 to 2.6
>transition.

Your fix is a definite improvement for me, my "run any importable" 
patch is looking a lot better.  There's just one problem left, which 
is that runpy is overwriting sys.argv[0] even if it doesn't need 
to.  So, when running from a zipfile, sys.argv[0] ends up None, which 
is wrong.

However, if I ask runpy not to mess with sys, it creates a new module 
namespace to run the code in, bringing me right back to square one 
(i.e., not being run in __main__).  Any thoughts?

My fallback at this point would be to add an option to run_module() 
to request that sys.argv[0] be used in place of calling 
_get_filename().  It seems ugly to do that, though, if only because 
there are already so many arguments to that function.

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