Probably the easiest is to transfer your Mathematica code to Fortran or C using built-in and third-party facilities within mathematica, and then call this C/Fortran from python.
Mathics is under GPL license, incompatible with Sympy? here is a relevant SAGE discussion with some partial solutions: https://groups.google.com/forum/#!topic/sage-devel/JLg-fJ4dJns and also scala parser: https://github.com/mattpap/mathematica-parser On Thursday, October 9, 2014 2:27:21 AM UTC-5, Francesco Bonazzi wrote: > > Mathics somewhat translates Mathematica to SymPy. > > https://github.com/poeschko/mathics > > http://www.mathics.org/ > > I tried to play with Mathics' code a while ago, unfortunately there is > very little documentation. In any case, Mathics has a parser for > Mathematica's code, it builds its own AST object mapping, and calls SymPy > to perform the algorithmic evaluation. You could try to use it and put a > debugging breakpoint on the SymPy calls, but that's still hard to do. > > Mathics has also a Mathematica compatible pattern matcher. > > Technically, I think that if we add assumptions-awareness and specificity > sorting to the patterns containing wild cards, and default/optional > wildcards, SymPy's patterns would become much more similar to those of > Mathematica (except for excessive matches like inverse functions and > powers). > > On Thursday, October 9, 2014 6:15:22 AM UTC+2, Richard Fateman wrote: >> >> There are at least 2 open source parsers for Mathematica code. >> >> The trivial stuff -- parsing x Sin[x] into x*sin(x) equivalent could >> be >> done by following directions in any intro to compilers book. >> >> The rest of the stuff, which requires pattern matching, simplification, >> and >> a whole collection of specific commands all sitting inside the Mathematica >> rule-based evaluation mechanism ... well you won't get that by >> translating >> naively into python. >> >> It's like saying you can translate Lisp into C. Sure. But if you want >> to >> execute it, you need a whole bunch of stuff, like a garbage collector, >> arbitrary-precision integers, etc etc etc that you don't get by >> translating >> (+ a b) into a+b. >> >> >> >> On Wednesday, October 8, 2014 7:16:02 PM UTC-7, [email protected] wrote: >>> >>> you can try this expression for a test >>> (-6x^2-x-7)(2x^3+3x^2-2x-5) >>> >>> 在 2012年5月2日星期三UTC+8上午12时19分18秒，Aaron Meurer写道： >>>> >>>> This probably is doable, but we would need an actual parser in SymPy, >>>> which is the difficult part. If we had that, adding rules for >>>> Mathematica functions would ideally not be hard. See >>>> https://github.com/sympy/sympy/wiki/parsing for some ideas on parsing. >>>> >>>> More realistically, in >>>> http://code.google.com/p/sympy/issues/detail?id=161, it is suggested >>>> that for Maxima, Sage can be used. So I'm wondering if Sage, or maybe >>>> some other project has a parser for Mathematica that can put it in a >>>> form that SymPy can read, or at least on close. >>>> http://code.google.com/p/sympy/issues/detail?id=2864 is also related >>>> to this. >>>> >>>> Can you give an example of a Mathematica expression that you want to >>>> parse? >>>> >>>> Aaron Meurer >>>> >>>> On Tue, May 1, 2012 at 9:00 AM, [email protected] >>>> <[email protected]> wrote: >>>> > I doubt that any automated translation will produce quality code. The >>>> > style of Mathematica code is much more functional than the object >>>> > oriented python style. What you get from automatic translation will >>>> > not be human-readable (it will be python but very obfuscated). >>>> > >>>> > So I am very pessimistic. However if you have any success with this >>>> it >>>> > will be great for sympy. >>>> > >>>> > -- >>>> > You received this message because you are subscribed to the Google >>>> Groups "sympy" group. >>>> > To post to this group, send email to [email protected]. >>>> > To unsubscribe from this group, send email to >>>> [email protected]. >>>> > For more options, visit this group at >>>> http://groups.google.com/group/sympy?hl=en. >>>> > >>>> >>> -- 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 http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/85b47c59-5675-46e9-aeb1-dd472a9f4f1d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
