Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 4032 by [email protected]: trigsimp() TypeError: symbolic
boolean expression has no truth value.
http://code.google.com/p/sympy/issues/detail?id=4032
n,k = symbols('n k', integer=True, positive=True)
simplify(2**(n/2)*cos(pi*n/4)/2 + 2**(n - 1)/2)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/pape/sympy/sympy/simplify/simplify.py", line 3699, in simplify
expr = trigsimp(expr, deep=True)
File "/home/pape/sympy/sympy/simplify/simplify.py", line 1427, in trigsimp
return trigsimpfunc(expr)
File "/home/pape/sympy/sympy/simplify/simplify.py", line 1420, in <lambda>
'matching': (lambda x: futrig(x)),
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4272, in futrig
e = bottom_up(e, lambda x: _futrig(x, **kwargs))
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4044, in
bottom_up
for a in rv.args])
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4047, in
bottom_up
rv = F(rv)
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4272, in <lambda>
e = bottom_up(e, lambda x: _futrig(x, **kwargs))
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4342, in _futrig
e = greedy(tree, objective=Lops)(e)
File "/home/pape/sympy/sympy/strategies/core.py", line 118, in minrule
return min([rule(expr) for rule in rules], key=objective)
File "/home/pape/sympy/sympy/strategies/core.py", line 45, in chain_rl
expr = rule(expr)
File "/home/pape/sympy/sympy/simplify/fu.py", line 934, in TR10i
return bottom_up(rv, f)
File "/home/pape/sympy/sympy/simplify/simplify.py", line 4047, in
bottom_up
rv = F(rv)
File "/home/pape/sympy/sympy/simplify/fu.py", line 929, in f
rv = do(rv) # final pass to resolve any new inducible pairs
File "/home/pape/sympy/sympy/simplify/fu.py", line 870, in do
split = trig_split(*args, two=True)
File "/home/pape/sympy/sympy/simplify/fu.py", line 1833, in trig_split
gcd = a.gcd(b).as_expr()
File "/home/pape/sympy/sympy/core/exprtools.py", line 536, in gcd
exp = min(exp, other.factors[factor])
File "/home/pape/sympy/sympy/core/relational.py", line 226, in __nonzero__
raise TypeError("symbolic boolean expression has no truth value.")
TypeError: symbolic boolean expression has no truth value.
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