This is due to recent upgrade to Sage 9.5. I will try to have it fixed in a few hours or revert to 9.4 until I figure out the fix.
On Wednesday, 2 February 2022 at 12:28:11 UTC-7 dsfitz...@gmail.com wrote: > Here is an example with Sage cells in context: > https://opentext.uleth.ca/Math3410/sec-kernel-image.html#p-283-part2 > > If I remove the init_printing() line, or change this to > init_printing(use_latex=False), the code will run, but I lose the > MathJax-formatted output. > > I can't tell if this is a bug in the init_printing() function (to my > knowledge, there is no recent update to Sympy -- I upgraded my local Python > installation and everything is still working) or if something is going > wrong with Sage Cell trying to process the output. > > On Wednesday, February 2, 2022 at 12:09:52 PM UTC-7 Sean Fitzpatrick wrote: > >> This is in SageMathCell, rather than in a local installation of Sage. I >> don't think there's much I can do about what is running on here. >> [image: sagecell.png] >> >> On Wednesday, February 2, 2022 at 11:39:40 AM UTC-7 HG wrote: >> >>> I tried it in sage 9.2 nice printing. >>> >>> But in sage I use show(LatexExpr("r \mu \epsilon)) >>> >>> μϵ >>> >>> I am not sure that what you want (and naturaly first command in cell >>> %display latex in sage) >>> >>> One can even format text in a beautifull latex >>> >>> show(LatexExpr(r"This \ is \ \mu \ and \ \epsilon")) >>> >>> This is μ and ϵ >>> >>> best >>> Best >>> >>> Henri >>> Le 02/02/2022 à 18:38, Sean Fitzpatrick a écrit : >>> >>> I'm teaching a linear algebra course where we use the Sympy Python >>> package for a lot of the computations. This includes a PreTeXt textbook >>> where there are Sage Cells throughout, with sample code supplied. >>> >>> Until today (I think it was working yesterday), I've had no trouble >>> running code like the following: >>> >>> from sympy import Matrix, init_printing >>> init_printing() >>> A = Matrix([[1,2,3,4],[5,6,7,8],[9,0,1,2]]) >>> display(A.rref()) >>> >>> The init_printing function from Sympy renders the output in MathJax >>> rather than pretty-printed plain text, which is nice for teaching. I can >>> run this with the language set to either Sage or Python. (the 'display' >>> command is only needed for Python, which is funny, because it is not needed >>> in Jupyter with a Python kernel.) >>> >>> Right now this code throws about 50 lines of error messages; the main >>> error is a Type Error: >>> >>> TypeError: Object of type <class 'bytes'> with value of '(a very, very >>> long string that I won't reproduce here)' is not JSON serializable >>> >>> Was there a change made today that would cause this error? Maybe in the >>> Sympy library? If I remove the init_printing() line, everything works, >>> except that there's no longer nice display for the output. >>> >>> The reason for using Python syntax is that we also do labs in Jupyter >>> notebooks. Our institution has a Jupyter hub with Python and R kernels, but >>> no Sage kernel. (We do not have a CoCalc subscription.) >>> >>> I know there is a Sage equivalent to init_printing (although I forget >>> what it is) but that won't work on the Jupyter side. >>> >>> -- >>> 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...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sage-support/0262ca41-4a74-467b-8f46-0af9ad6c4df1n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/sage-support/0262ca41-4a74-467b-8f46-0af9ad6c4df1n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/0e36f0b7-1114-4031-9a54-0f6527c4ee02n%40googlegroups.com.
