At least in the following situation it makes sense: In [6]: a = Subs(Derivative(g(x, y), y), (y,), (t**2,))
In [7]: a.subs(g, Lambda([x,y], x*y)) Out[7]: Subs(Derivative(_y*x, _y), (_y,), (t**2,)) In [8]: a.subs(g, Lambda([x,y], x*y)).doit() Out[8]: x What do you think? -- 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.
