The dot printer does this. See http://docs.sympy.org/latest/modules/printing.html#sympy.printing.dot.dotprint, and http://docs.sympy.org/latest/tutorial/manipulation.html for an example.
Aaron Meurer On Wed, Apr 6, 2016 at 5:42 PM, Christophe Bal <[email protected]> wrote: > Hello. > > It should be fairly easy to transform the sympy output into a Graphviz file. > > > Christophe BAL > Enseignant de mathématiques en Lycée et développeur Python amateur > --- > French teacher of math in a high school and amateur Python developer > > 2016-04-06 23:32 GMT+02:00 Nathan Goldbaum <[email protected]>: >> >> >> >> On Wed, Apr 6, 2016 at 4:09 PM, Nathan Hayden <[email protected]> >> wrote: >>> >>> Hi, I'm new to SymPy, but I'm using it to do some simple things already. >>> >>> I'm wondering, can I feed SymPy an expression and get a tree >>> representation back showing me the order of operations used to evaluate the >>> expression? I know this is all handled under the hood, but I don't know if >>> it's exposed. >>> >>> >>> For example, for the expression: 4 * 5 + 6 * (1 + 2) >>> >>> I'd like to get something like: >>> >>> + >>> / \ >>> * * >>> / \ / \ >>> 4 5 6 + >>> / \ >>> 1 2 >>> >>> Is this a thing? >> >> >> from sympy.printing.tree import print_tree >> from sympy import S >> >> print_tree(S(' 4 * 5 + 6 * (1 + 2)', evaluate=False)) >> >> I'm not sure there's a way to make it print like you want, but you should >> be able to whip something up following this: >> >> http://docs.sympy.org/latest/tutorial/manipulation.html >> >> (particularly the bits toward the bottom). >> >> -Nathan >> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "sympy" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/sympy. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/90597353-0ff0-42c8-a554-59f4b069cba2%40googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/sympy. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sympy/CAJXewOnEcLhWZqJWEzAq78Y4hHhmfFfkD%3DHpU_w0BKmZgWi8MA%40mail.gmail.com. >> >> For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAAb4jGnTidRnOFb%3DB9_WbMM551Cuo9NwwefqF0Ky4kr9aTaVTA%40mail.gmail.com. > > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6KqbVKpWBOrqsYPKSq5Dy7NVsMSnOajz66PQRhM2HFjHQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
