Hi Mitesh,
On Sep 2, 12:42 am, Mitesh Patel <qed...@gmail.com> wrote:
> ...
> If you still have a copy of the "hanging" package directory, could you
> try print-debugging to isolate the problem? Possibilities include the
> system calls to 'tar' and to 'sage -hg diff'.
I reconstructed the hanging package directory, and additional print
statements in spkg-pkg located the problem:
I have a print statement before and after the line
p = Popen("cd %s; sage --hg diff" % dir, shell=True, stdout=PIPE,
stderr=PIPE)
*Both* print statements are executed.
Then, I inserted
print p.stdout.read()
which was executed as well. Amazing enough, *with* that additional
line, the package was created!
Then, I replaced it by
print p.stderr.read()
and this is what hangs. Indeed, the next line in the unmodified script
is
if len(p.stderr.read()) != 0:
So, that's the problem. Why is p.stderr.read() hanging? And why does
it not hang if p.stdout.read() is called first?
Cheers,
Simon
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