This patch changes sys.path[0] to contain an absolute 
instead of a relative pathname.

See python-dev thread starting here:
http://mail.python.org/pipermail/python-dev/2003-
January/031896.html

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The attached patch (sysmodule.diff) fixes the problem on 
Windows - that's the only system where I can test it.

It leaves sys.argv alone and only changes sys.path[0] to an 
absolute pathname.

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Feel free to check this in.

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Checked in as sysmodule.c, rev 2.112.

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I believe this problem should be fixed also on systems other
than Windows, or the checkin should be reverted again.

I've prepared a patch based on an idea of Skip Montanaro,
who pointed my to the realpath() function.
It is tested on a SuSE 7.0 Linux system, but I don't know
which #ifdef I have to se around this code. See the patch
for details.

Reopened and unassigned for review.

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Here's a somewhat different patch.  I don't know if the actual sysmodule.c
patch is correct or not, but it includes the necessary framework to
verify that realpath() is available.  Pick and choose bits as you like.

Skip

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The abspath.diff patch seems to work.

But the two new includes in sysmodule.c are not needed AFAICT.

Check in time!

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Regarding the includes, I was just going by the realpath manpage on 
my Mac and the fact that a quick scan of Include/*.h didn't turn them up.
S

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stdlib.h is included by Python.h and pyport.h.

I don't see anything in sys/param.h that provides realpath().

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On my Mac stdlib.h contains the declaration for realpath() and sys/param.h defines MAXPATHLEN which is referenced in the realpath man page.  On
my Mandrake system, realpath() is declared in stdlib.h.  The man page there
references limits.h, though I didn't see any constant like MAXPATHLEN
referenced in the man page.

I guess dump the #includes and wait to see if any platforms complain.
S

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Yeah, but stdlib.h is *already* being included (by Python.h)
and MAXPATHLEN is also already available (through osdefs.h).

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Will this patch make it into 2.3a2?

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I'd like this in 2.3a2.

Skip, do you have time to check this in (less the #include
<sys/param.h> and #include <stdlib.h>)? If not, I can do it.

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I'll check this in.

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All checked in.