Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1902 by alberthilbert: 'has' method fails when argument
is 'Symbol' or 'Wild'
http://code.google.com/p/sympy/issues/detail?id=1902
'has' method fails when argument is 'Symbol' or 'Wild'.
For example the following code:
x = Symbol('x')
x.has(Symbol)
produces:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/pymodules/python2.6/sympy/core/basic.py", line 1310, in has
return p in self.atoms(p.func)
File "/usr/lib/pymodules/python2.6/sympy/core/basic.py", line 858, in
atoms
return set(_atoms(self, typ=types))
File "/usr/lib/pymodules/python2.6/sympy/core/basic.py", line 842, in
_atoms
if isinstance(expr, t): return [expr]
TypeError: isinstance() arg 2 must be a class, type, or tuple of classes
and types
Raffaele
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