Updates:
Status: Fixed
Labels: Solvers
Comment #5 on issue 1353 by asmeurer: solve() doesn't work with Sage types
as input
http://code.google.com/p/sympy/issues/detail?id=1353
I finally installed sage. I had to apply a patch to mpmath to make sympy
import (see my upcoming 0.7.0 branch), but after that, I get
sage: var("E R T A beta")
(E, R, T, A, beta)
sage: eq = (E/(R*T**2) == A/beta * exp(-E/(R*T)))
sage: import sympy
sympy/polys/domains/__init__.py:79: UserWarning: gmpy library is not
installed, switching to 'python' ground types
warn("gmpy library is not installed, switching to 'python' ground types")
sage: sympy.solve(eq.left()-eq.right(), E)
---------------------------------------------------------------------------
NotImplementedError Traceback (most recent call last)
/Users/aaronmeurer/Documents/python/sympy/sympy/<ipython console> in
<module>()
/Users/aaronmeurer/Documents/python/sympy/sympy/sympy/solvers/solvers.py in
solve(f, *symbols, **flags)
225
226 symbol = symbols[0]
--> 227 strategy = guess_solve_strategy(f, symbol)
228
229 if strategy == GS_POLY:
/Users/aaronmeurer/Documents/python/sympy/sympy/sympy/solvers/solvers.py in
guess_solve_strategy(expr, symbol)
67 eq_type = -1
68 if expr.is_Add:
---> 69 return max([guess_solve_strategy(i, symbol) for i in
expr.args])
70
71 elif expr.is_Mul:
/Users/aaronmeurer/Documents/python/sympy/sympy/sympy/solvers/solvers.py in
guess_solve_strategy(expr, symbol)
80 return GS_RATIONAL_CV_1
81 else:
---> 82 raise NotImplementedError
83 else:
84 return max([guess_solve_strategy(i, symbol) for i in
expr.args])
NotImplementedError:
Which is the same thing I get in isympy. So I'm closing this.
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