[SciPy-user] NumPy vs. SciPy and other speed comparisons
Wed Jun 11 05:44:34 CDT 2008
On Wed, Jun 11, 2008 at 05:33, Robert Kern <firstname.lastname@example.org> wrote:
> On Wed, Jun 11, 2008 at 05:06, Pearu Peterson <email@example.com> wrote:
>> We used to have postponed import hooks for that in past
>> but afaik we dropped these because they were hackish and at some moment
>> the time of importing scipy improved (I think it was in Python 2.4 or
>> 2.5) considerably.
> The problem is that we left scipy.pkgload in, and creating that from
> numpy._import_tools.PackageLoader implicitly adds all of the
> subpackages to scipy.__all__.
Correction: we actually do call pkgload(postpone=True). However, even
with the postponed import (which does not add any proxy objects), it
still appends to __all__. I believe the following patch to numpy fixes
the problem, but I'm not sure if leaving the if clause alone is
correct in all cases:
--- numpy/_import_tools.py (revision 5245)
+++ numpy/_import_tools.py (working copy)
@@ -183,9 +183,6 @@
postpone_import = getattr(info_module,'postpone_import',False)
if (postpone and not global_symbols) \
or (postpone_import and postpone is not None):
- self.log('__all__.append(%r)' % (package_name))
- if '.' not in package_name:
old_object = frame.f_locals.get(package_name,None)
This can probably go into numpy 1.1.1 as a bugfix, so I don't think
it's critical to work around it in scipy/__init__.py.
"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
-- Umberto Eco
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