On 1/14/08, John Cremona <[EMAIL PROTECTED]> wrote: > > Jaap is right: > > Compare >
I've created and posted a patch here: http://trac.sagemath.org/sage_trac/ticket/1776 Refereeing would be appreciated! > [EMAIL PROTECTED] > ---------------------------------------------------------------------- > | SAGE Version 2.9.3, Release Date: 2008-01-05 | > | Type notebook() for the GUI, and license() for information. | > ---------------------------------------------------------------------- > > sage: f(x) = -x > > Exiting SAGE (CPU time 0m0.01s, Wall time 0m15.78s). > > with > > [EMAIL PROTECTED] > ---------------------------------------------------------------------- > | SAGE Version 2.9.3, Release Date: 2008-01-05 | > | Type notebook() for the GUI, and license() for information. | > ---------------------------------------------------------------------- > > sage: f(x) =-x > ------------------------------------------------------------ > File "<ipython console>", line 1 > <type 'exceptions.SyntaxError'>: can't assign to function call > (<ipython console>, line 1) > > > John > > On 14/01/2008, Jaap Spies <[EMAIL PROTECTED]> wrote: > > > > William Stein wrote: > > > On 1/14/08, Jason Grout <[EMAIL PROTECTED]> wrote: > > > > >> I noticed that the following gives an error in Sage 2.9: > > >> > > >> sage: f(x)=-x > > >> ------------------------------------------------------------ > > >> File "<ipython console>", line 1 > > >> <type 'exceptions.SyntaxError'>: can't assign to function call (<ipython > > >> console>, line 1) > > >> > > >> Is that a bug? It seems to be related to the negative sign, since the > > >> following works: > > >> > > >> sage: f(x)=(-x) > > >> sage: f(2) > > >> -2 > > > > > > Was there something funny about your x in the above example, > > > because it works fine for me: > > > > > > teragon:standard was$ sage > > > ---------------------------------------------------------------------- > > > | SAGE Version 2.9.3, Release Date: 2008-01-05 | > > > | Type notebook() for the GUI, and license() for information. | > > > ---------------------------------------------------------------------- > > > > > > sage: f(x) = -x > > > sage: f(2) > > > -2 > > > > > > > Could it be related to the spaces around '='? > > > > Jaap > > > > > > > > > > > > -- > John Cremona > > > > -- William Stein Associate Professor of Mathematics University of Washington http://wstein.org --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~----------~----~----~----~------~----~------~--~---
