On Nov 10, 2007 7:55 PM, John Voight <[EMAIL PROTECTED]> wrote: > > When I add > > from sage.matrix.constructor import matrix > > then I get the error: > > /home/jvoight/sage/local/lib/python2.5/site-packages/sage/matrix/ > constructor.py in <module>() > 19 > #***************************************************************************** > 20 > ---> 21 import sage.rings.all as rings > 22 import sage.matrix.matrix_space as matrix_space > 23 from sage.structure.sequence import Sequence > > <type 'exceptions.AttributeError'>: 'module' object has no attribute > 'all'
That's because you've made a circular import. In rings you import constructor, and in constructor you import rings! So it's impossible to resolve. What you have to do is import from constructor *right* before you actually use it (in the body of your function). > > If I change this line to > > import sage.rings as rings > > then Sage gives me a Unhandled SIGSEGV. > > Help, JV > > > > > > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
