It seems ok to me. You asked why it is imported by default: I have no reason. It just happened to be like that when it was written. Anyway, it is also the only way to change the backend.
--- Reply to this email directly or view it on GitHub: https://github.com/sympy/sympy/pull/1476#issuecomment-7641546 -- You received this message because you are subscribed to the Google Groups "sympy-patches" group. To post to this group, send email to sympy-patches@googlegroups.com. To unsubscribe from this group, send email to sympy-patches+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
