Bill Bell wrote: > Hello all, > > I am teaching an adult who is struggling (and I mean struggling) to > learn how to expand and simplify algebraic expressions. I have been > using sympy to produce solutions for randomly produced examples using > '.expand.' But there has to be a better way of getting expressions > 'in' to sympy. > > I have been writing things like > > (5*(3*x-10)-4*(6-2*x)). expand() > > How can I pass a string such as '5*(3*x-10)-4*(6-2*x)' to /expand/ for > processing, please? > > Bill > > -- > Bill Bell, C.D.P. > Blog: http://unsymptomatictoo.blogspot.com/ > LinkedIn profile - http://www.linkedin.com/in/williambell > > > > Use the fact that python can execute itself. Write a python script that predefines all the single letters as symbols. Read in the string you want to expand. Use the eval function on the string and expand and print what eval returns. If eval does not work look up exec. Always let python be it own parser.
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