Hi I what version of SymPy did you try this?
On 4 August 2013 15:33, George Gerber <george.ger...@gmail.com> wrote: > Good day, > I am trying to solve three force equilibrium equations. I have simplified > the code below to only 1 equation to better show the error i get > (typeerror: unhashable type list). The problem appears to be the use of > piecewise. Would somebody be so kind as to show how to make piecewise and > solve play along? > > from sympy import symbols,solve,Piecewise > e,emax,smax=symbols('e emax smax') > s=Piecewise((0,e<=0),(e/emax*smax,e<emax),(smax,True)) > print solve([sigma-1],[e]) > > > > > -- > 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 post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- 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 post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.