Status: Accepted
Owner: asmeurer
Labels: Type-Defect Priority-Medium Matrices
New issue 2220 by asmeurer: Bug with Matrix.is_symbolic and Matrix.is_upper
http://code.google.com/p/sympy/issues/detail?id=2220
In [47]: a = Matrix([[1, 2, 3]])
In [48]: a.is_symbolic()
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
/Users/aaronmeurer/Documents/Python/sympy/sympy/<ipython console> in
<module>()
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/matrices/matrices.pyc
in is_symbolic(self)
1213 for i in range(self.cols):
1214 for j in range(self.rows):
-> 1215 if self[i,j].has(Symbol):
1216 return True
1217 return False
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/matrices/matrices.pyc
in __getitem__(self, key)
256
257 if not (i>=0 and i<self.rows and j>=0 and j <
self.cols):
--> 258 raise IndexError("Index out of range: a[%s]" %
(key,))
259 else:
260 return self.mat[i*self.cols + j]
IndexError: Index out of range: a[(1, 0)]
In [49]: a.is_upper()
---------------------------------------------------------------------------
IndexError Traceback (most recent call last)
/Users/aaronmeurer/Documents/Python/sympy/sympy/<ipython console> in
<module>()
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/matrices/matrices.pyc
in is_upper(self)
1199 for i in range(self.cols):
1200 for j in range(self.rows):
-> 1201 if i > j and self[i,j] != 0:
1202 return False
1203 return True
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/matrices/matrices.pyc
in __getitem__(self, key)
256
257 if not (i>=0 and i<self.rows and j>=0 and j <
self.cols):
--> 258 raise IndexError("Index out of range: a[%s]" %
(key,))
259 else:
260 return self.mat[i*self.cols + j]
IndexError: Index out of range: a[(1, 0)]
In [50]: a.is_lower()
Out[50]: True
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