Looks like a bug. Can you open an issue in the issue tracker? Aaron Meurer
On Mon, Jul 10, 2017 at 9:11 PM, Antoine Falaize <[email protected]> wrote: > Hello sympy planet! > Is there any reason for the following behavior? > > In sympy 1.0: >>>> import sympy as sy >>>> M1 = sy.Matrix.zeros(0, 0) >>>> M2 = sy.Matrix.zeros(0, 1) >>>> M3 = sy.Matrix.zeros(0, 2) >>>> M4 = sy.Matrix.zeros(0, 3) >>>> sy.Matrix.hstack(M1, M2, M3, M4).shape > (0, 6) > > But in sympy 1.1: >>>> M1 = sy.Matrix.zeros(0, 0) >>>> M2 = sy.Matrix.zeros(0, 1) >>>> M3 = sy.Matrix.zeros(0, 2) >>>> M4 = sy.Matrix.zeros(0, 3) >>>> sy.Matrix.hstack(M1, M2, M3, M4).shape > (0, 3) > > whereas: >>>> M1 = sy.Matrix.zeros(1, 0) >>>> M2 = sy.Matrix.zeros(1, 1) >>>> M3 = sy.Matrix.zeros(1, 2) >>>> M4 = sy.Matrix.zeros(1, 3) >>>> sy.Matrix.hstack(M1, M2, M3, M4).shape > (1, 6) > > -- > 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/19bfd65d-6ffa-4b91-bd6d-c6ea48ddf71d%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/CAKgW%3D6JSF8KtpCs-Rf1ottwqasSG11im4t2gt1S3-JznO%3DWH0Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
