On Sun, Sep 23, 2018 at 9:57 AM, Simon King <simon.k...@uni-jena.de> wrote: > Hi Andy, > > On 2018-09-23, Andy Howell <a...@gamubaru.com> wrote: >> I'd guess the word "tricks" was objectionable. What I meant was >> techniques like locating the source using funcName? Now that I know that >> exists, I can add it to my "practice". Discovering those though google >> searches takes time. I'd rather have a catalog of them in a known place. >> Sadly my memory is not getting better with age. Having one place to >> check speeds the process. > > Searching for the sources should actually be easy: Put ?? after the > object you want to study, and hit return (or shift-return in a > notebook). This is supposed to show you the source code of the object. > > Also, if you want to directly *edit* the source code, it is possible to do > edit(object_you_are_investigating, 'vim') > (where the string 'vim' is supposed to be the name of your favourite editor > ;-) > That said, I am hardly using edit(...) myself, usually I just look up > what file is relevant (by ??) and open it in geany. > > Of course, after altering the source code, you'd need to run "sage -b" > (or "sage -br") to build the changes (or build the changes and restart > sage). > > Note that you'll find introspection stuff in sage.misc.sageinspect, such as > this: > sage: from sage.misc.sageinspect import sage_getfile > sage: P.<x,y,z> = QQ[] > sage: sage_getfile(P) > > '/home/king/Sage/git/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/multi_polynomial_libsingular.pyx' > sage: sage_getfile(x) > > '/home/king/Sage/git/sage/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx' > > However, be warned: I just notice that the anser of sage_getfile(P) is > wrong (the source file is NOT in local/lib/..., but of course in > src/sage/rings/... Only the anser for sage_getfile(x) is correct.
+1 to pointing this out. People have been confused about '/home/king/Sage/git/sage/local/lib/python2.7/site-packages/sage/rings/polynomial/multi_polynomial_libsingular.pyx' versus '/home/king/Sage/git/sage/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx' probably thousands of times (with both sage and python in general). Setuptools has a "python setup.py develop" mode that sometimes fixes this, but we don't use it... -- William > > Question to all: Is there already a ticket for the wrong behaviour of > sage_getfile? > >>> How to I find the code being called? >>> >>> >>> %prun is reasonably good for that. The foo?? is also very useful for >>> looking at a particular block of code. > > If the code isn't pure python, %crun might also be useful (for > performance analysis), although you need to install gperftools to make > it work. > > Best regards, > Simon > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
