Hi, I've never heard of this "who" function, but evidently it is in Ipython so the sage command line automatically has it. Having never heard of "who", I had implemented something similar for Sage back in 2004 (!) called "show_identifiers()", which is like the same function in Magma (which is called ShowIdentifiers() there). It is evidently different than "who" in Ipython, since:
sage: show_identifiers() ['Out', 'get_ipython', 'sage_prompt', 'In', 'exit', 'quit'] sage: R = 250e3 sage: show_identifiers() ['Out', 'get_ipython', 'sage_prompt', 'In', 'exit', 'R', 'quit'] With show_identifiers I made it record the actual objects at startup, and check to see if they change. The code is here if you want to look at it: https://github.com/sagemath/sage/blob/master/src/sage/misc/session.pyx As show_identifiers() is a normal function call it should also work in the notebook, scripts etc., rather than only on the interactive command line. William On Wed, Apr 24, 2013 at 2:27 PM, João Alberto Ferreira <joa...@gmail.com>wrote: > Ok! thank you! > > > On Wednesday, April 24, 2013 6:15:06 AM UTC-3, Volker Braun wrote: >> >> "who" prints the newly-defined variables, but R is already defined as the >> r-system.org interface. You can redefine it as you want, but as far as >> Python is concerned that just changes a variable but doesn't add a new one. >> >> >> >> On Tuesday, April 23, 2013 10:34:15 PM UTC+1, João Alberto Ferreira wrote: >>> >>> Hi! >>> >>> I was executing the examples of the Sage Beginner's Guide book when I >>> found a curious behavior in Sage. >>> >>> Whenever I launch Sage and define the variable >>> >>> sage: R = 250e3 >>> >>> and issue the command >>> >>> sage: who >>> >>> the output is >>> >>> Interactive namespace is empty. >>> >>> If I define other variables and issue again the command "who", the other >>> variables name are returned, but not the "R" variable name. >>> >>> Whenever I launch Sage and define a different variable name, like >>> >>> sage: j = 250e3 >>> >>> and issue the command "who", the output is presented correctly as "j". >>> >>> Is this a bug or I missed something? >>> >>> Cordially, >>> >>> João Alberto Ferreira. >>> >>> ----- >>> ~$ uname -a >>> Linux Hades 3.2.0-40-generic #64-Ubuntu SMP Mon Mar 25 21:22:26 UTC 2013 >>> i686 athlon i386 GNU/Linux >>> >>> sage: version() >>> 'Sage Version 5.8, Release Date: 2013-03-15' >> >> -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-support?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- William Stein Professor of Mathematics University of Washington http://wstein.org -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
