Try to use unification, if this can help
http://matthewrocklin.com/blog/work/2012/11/01/Unification/
The problem with this module is that it appears not to be flexible on
missing args in *Add*. If you add *A* you don't get any matches.
Here is a slightly modified example
>>> from sympy.unify import unify
>>> B, n, k = var('B n k')
>>> exp = S('3*x**2+2*x**3')
>>> patt = B + k*x**n
>>> u = unify(exp, patt, {}, variables=[B, n, k])
>>> list(u)
⎡⎧ 3 ⎫ ⎧ 2 ⎫⎤
⎢⎨B: 2⋅x , k: 3, n: 2⎬, ⎨B: 3⋅x , k: 2, n: 3⎬⎥
⎣⎩ ⎭ ⎩ ⎭⎦
Maybe Matthew Rocklin could help.
On Tuesday, February 11, 2014 10:40:27 PM UTC+1, Vincent MAILLE wrote:
>
> Hi, is it possible to find all possible matches :
>
> exp = S('3*x**2+2*x**3')
> k, n, A,B = Wild('k',exclude = [0]), Wild('n',exclude =
> set([0,1])),Wild('A'), Wild('B')
> T = (A+k*x**n+B).matches(exp)
>
> returns
>
> {k_: 2, n_: 3, A_: 0, B_: 3*x**2}
>
> But can I have :
> [{k_: 2, n_: 3, A_: 0, B_: 3*x**2}, {k_: 3, n_: 2, A_: 2*x**3, B_: 0}]
>
> Thanks
>
> Vincent
>
>
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