Dear Liu, Thanks for your prompt reply! I tried as you suggested, where speedx is the expression, whose numerator and denominator I want to get. I got the error below. If I do it without ‚sm.‘, I get the error message expr not known.
Thanks for your further help! AttributeError Traceback (most recent call last) Input In [7], in <module> 83 print(speedx) 84 print(speedy)---> 85 f, g = sm.expr.as_numer_denom(speedx) 86 print(r, g) 88 q = [q1, q2, q3] AttributeError: module 'sympy' has no attribute 'expr' On Mon 21. Mar 2022 at 10:34 Qijia Liu <liu...@pku.edu.cn> wrote: > f,g=expr.as_numer_denom() > > -- > 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 sympy+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/78730755-ed5c-4490-b4d2-1aa5d72e84f0n%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/78730755-ed5c-4490-b4d2-1aa5d72e84f0n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Best regards, Peter Stahlecker -- 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 sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CABKqA0ZZjfeHuXho6mxBwdVxSb_tX%2BL-9e9N0rxbMPa90R3%3DTA%40mail.gmail.com.
