oh, gosh. Thank you Jonathan! Thanks for bringing me up to speed on this issue. My thought was simply to make laplace_tranform() usage more closely match the documentation for sympy.dsolve(), which suggests sympy.Eq() for equations. Best wishes, Eric
On Sat, Feb 26, 2022 at 3:31 PM gu...@uwosh.edu <gu...@uwosh.edu> wrote: > Eric, > > Please be aware that sympy.Equality (.Eq) is not an equation. It is a > logical statement that evaluates to True or False. If it can be evaluated > it will collapse to that. If having an entity that behaves as an equation > is important to you please help to make it so by contributing to the > discussion and efforts surrounding this draft symPEP ( > https://github.com/sympy/SymPEPs/pull/1) and this PR( > https://github.com/sympy/sympy/pull/21333). > > Regards, > Jonathan > > On Saturday, February 26, 2022 at 2:16:28 PM UTC-6 ejb...@gmail.com wrote: > >> Thank you! I'm especially grateful for the updates to laplace_transform() >> in sympy-1.10rc3 >> >> One (simple?) thing I ask you to consider: >> Please make laplace_transform() accommodate equations as input. >> >> Here's what I see with sympy-1.10rc3 >> >> import sympy >> t,s = sympy.symbols("t s") >> x = sympy.Function("x") >> de = sympy.Eq(x(t).diff(t),x(t)) >> sympy.laplace_transform(de,t,s) >>>> AttributeError: 'Equality' object >> has no attribute 'as_independent' >> >> a quick might be: >> def lap(eqn,s,t): >> from sympy import Equality, Eq, laplace_transform >> if isinstance(eqn,Equality): >> return >> Eq(laplace_transform(eqn.lhs,t,s),laplace_transform(eqn.rhs,t,s)) >> else: >> return laplace_transform(eqn,t,s) >> >> lap(de,s,t) >> Out[5]: Eq(s*LaplaceTransform(x(t), t, s) - x(0), LaplaceTransform(x(t), >> t, s)) >> >> best wishes, >> Eric >> >> On Sat, Feb 26, 2022 at 1:43 PM Oscar Benjamin <oscar.j....@gmail.com> >> wrote: >> >>> Hi all, >>> >>> I've just released SymPy 1.10rc3 release candidate. >>> >>> Following the previous release 1.10rc2 release candidate a couple of >>> regressions were reported: >>> https://github.com/sympy/sympy/issues/23144 >>> https://github.com/sympy/sympy/issues/23148 >>> >>> Thanks to Matthias Koeppe and Clément Robert for testing the release >>> candidate with the downstream SAGE and unyt libraries and also Paul >>> Spiering for helping to fix these issues. These have now been fixed >>> and the fixes backported to the 1.10 release branch so I've made a new >>> release candidate with the fixes. >>> >>> You can install SymPy 1.10rc3 with >>> >>> pip install -U --pre sympy >>> >>> You can also download the release files from GitHub: >>> >>> https://github.com/sympy/sympy/releases/tag/sympy-1.10rc3 >>> >>> Please test this release out in particular with downstream libraries. >>> I'm going to leave it a few days and then if no further issues are >>> reported I'll release this as 1.10 final. >>> >>> Oscar >>> >>> -- >>> 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+un...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/sympy/CAHVvXxTAW54BxZBkS0jHnCmdh3hDKRt6DjTLJgNJzsQ5oGOMGg%40mail.gmail.com >>> . >>> >> -- > 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/b4efcdeb-6fe8-4eee-a4e1-12dd69cda691n%40googlegroups.com > <https://groups.google.com/d/msgid/sympy/b4efcdeb-6fe8-4eee-a4e1-12dd69cda691n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CALpBD8jaBKSzqXGBSeW0ZEK97SEqK5bRv1W%3DwybCfwrv_UM%3D8A%40mail.gmail.com.
