Yeah, that looks like a wrong result to me. It's because it's using as_independent(x), but it should only do that if it's an Add. I think it should be an easy fix if you want to give it a shot.
Aaron Meurer On Mon, Mar 24, 2014 at 7:07 AM, Abdul-Azeez Isiaq <[email protected]> wrote: > I am quite new to python and am using the sympy library to work on some > mathematical code using the parser input. The problem is that it parses the > coefficient of x as the constant when there is no constant in the > expression. Below is a simple example of what am trying to explain. >>>> parse_expr("2x", transformations=transformations) > 2x >>>> eqn= parse_expr("2x", transformations=transformations) >>>> eqn.coeff('x',0) > 2 >>>> eqn.coeff('x') > 2 > ] > At least am very sure eqn.coeff('x',0) which is a constant is eqn to 0 in > this equation but the compiler says it is 2. > > -- > 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/16ac5b41-fb76-494d-b407-5f1087447c4a%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- 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/CAKgW%3D6%2BvjhE4L4aNfpctPCKjJfrNELUEuT0pZo8ZCikn%3DOKBkg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
