On 04/26/2010 06:49 AM, David Roe wrote:
Marshall's right that you need to change where the import comes from, but you actually want from sage.rings.finite_rings.constructor import FiniteField
Is this a compatibility issue that should have a deprecation period? I wonder how many people it will affect.
I suppose it would be easy to make a dummy finite_field module that imports in the relevant functions so that there could be a deprecation for a while.
Thanks, Jason
The class in sage.rings.finite_rings.finite_field_base is the base class, whereas FiniteField in constructor is the UniqueFactory that makes finite fields. sage: import sage.rings.finite_field shouldn't work since that module no longer exists. If you want similar functions, use sage: import sage.rings.finite_rings.constructor instead. Finally, if you're having trouble with import errors after upgrading, it's possible that you need to delete old files in the build directory. I don't know if this will happen or if upgrade takes care of it for you. David On Mon, Apr 26, 2010 at 7:32 AM, mhampton <hampto...@gmail.com <mailto:hampto...@gmail.com>> wrote: A number of tickets such as #8218 refactored quite a bit of finite field code. The FiniteField class you were using can be imported by: from sage.rings.finite_rings.finite_field_base import FiniteField -Marshall On Apr 26, 6:08 am, Simon King <simon.k...@nuigalway.ie <mailto:simon.k...@nuigalway.ie>> wrote: > Hi! > > I just upgraded to sage-4.4. I get: > > sage: from sage.rings.finite_field import FiniteField > --------------------------------------------------------------------------- > ImportError Traceback (most recent call > last) > > /home/king/<ipython console> in <module>() > > /home/king/SAGE/sage-4.3.1/local/lib/python2.6/site-packages/sage/ > rings/finite_field.py in <module>() > 154 import random > 155 > --> 156 from ring import is_FiniteField > 157 from sage.structure.parent_gens import normalize_names > 158 > > ImportError: cannot import name is_FiniteField > > and > > sage: from sage.rings import finite_field_element > --------------------------------------------------------------------------- > ImportError Traceback (most recent call > last) > > /home/king/<ipython console> in <module>() > > /home/king/SAGE/sage-4.3.1/local/lib/python2.6/site-packages/sage/ > rings/finite_field_element.py in <module>() > 35 import rational > 36 from sage.libs.pari.all import pari, pari_gen > ---> 37 from sage.structure.element import FiniteFieldElement > 38 import field_element > 39 import integer_mod > > ImportError: cannot import name FiniteFieldElement > > Shall I open a ticket? Is there a work-around? > > Cheers, > Simon > > -- > To post to this group, send an email to sage-devel@googlegroups.com <mailto:sage-devel@googlegroups.com> > To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com <mailto:sage-devel%2bunsubscr...@googlegroups.com> > For more options, visit this group athttp://groups.google.com/group/sage-devel <http://groups.google.com/group/sage-devel> > URL:http://www.sagemath.org -- To post to this group, send an email to sage-devel@googlegroups.com <mailto:sage-devel@googlegroups.com> To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com <mailto:sage-devel%2bunsubscr...@googlegroups.com> For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
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