Hi Georg,
On Tue, Jul 28, 2009 at 3:58 PM, gsw<georgswe...@googlemail.com> wrote:
>
> Hi,
>
> builds fine on MacIntel (32bit) OS X 10.4, but there are four (long)
> doctest failures:
> ----------------------------------------------------------------------
> The following tests failed:
>
>
> sage -t -long "devel/sage/sage/misc/abstract_method.py"
> sage -t -long "devel/sage/sage/misc/lazy_attribute.py"
> sage -t -long "devel/sage/sage/parallel/decorate.py"
> sage -t -long "devel/sage/sage/symbolic/expression.pyx"
> Total time for all tests: 20130.6 seconds
>
> The first two ones and the last one have been reported earlier in this
> thread, the last one already for 4.1.1.alpha0 IIRC.
> I have seen myself the third one, "decorate.py" failure before, it
> always hits me. On my system, it even occurs for the official Sage 4.1
> release. Sorry I didn't report it before, I didn't believe I was the
> only one to see it, it is a Python 2.6 issue:
>
> sage -t -long "devel/sage/sage/parallel/decorate.py"
> **********************************************************************
> File "/Users/Shared/sage/sage-4.1.1.alpha1/devel/sage/sage/parallel/
> decorate.py", line 64:
> sage: @parallel()
> def f(N): return N**Integer(2)
> Expected nothing
> Got:
> doctest:49: DeprecationWarning: os.popen2 is deprecated. Use the
> subprocess module.
> **********************************************************************
> 1 items had failures:
> 1 of 6 in __main__.example_3
> ***Test Failed*** 1 failures.
> For whitespace errors, see the file /Users/Shared/sage/
> sage-4.1.1.alpha1/tmp/.doctest_decorate.py
> [7.1 s]
>
> A quick glance at "decorate.py" revealed nothing immediate. Is this
> failure due to some OS X 10.4 peculiarities of the pyprocessing
> module?
Using trace() at the Sage command line reveals that the main culprit is the file
SAGE_ROOT/devel/sage-main/sage/parallel/ncpus.py
which uses os.popen2() for Mac OS X. In particular, have a look at line 49:
return int(os.popen2("sysctl -n hw.ncpu")[1].read())
The function os.popen2() has been deprecated since Python 2.6 and Sage
has switched to the Python 2.6.x series. There, happy? :-)
--
Regards
Minh Van Nguyen
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