#7934: Cannot import sage.matrix.all in isolation
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Reporter: dagss | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone:
Component: packages | Keywords:
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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This is against Sage 4.3.
I'm assuming that this should be possible from a normal Python session:
{{{
import sage.matrix.all
}}}
(after all, one can do {{{import sage.all}}})
But it fails:
{{{
$ sage -python
Python 2.6.2 (r262:71600, Jan 3 2010, 23:23:52)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sage.matrix.all
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/matrix/all.py", line 1, in <module>
from matrix_space import MatrixSpace, is_MatrixSpace
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/matrix/matrix_space.py", line 33, in <module>
import matrix
File "matrix.pyx", line 1, in init sage.matrix.matrix
(sage/matrix/matrix.c:1767)
File "matrix2.pyx", line 1, in init sage.matrix.matrix2
(sage/matrix/matrix2.c:42673)
File "matrix1.pyx", line 1, in init sage.matrix.matrix1
(sage/matrix/matrix1.c:10948)
File "matrix0.pyx", line 32, in init sage.matrix.matrix0
(sage/matrix/matrix0.c:22905)
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/modules/free_module.py", line 161, in <module>
import free_module_element
File "free_module_element.pyx", line 111, in init
sage.modules.free_module_element
(sage/modules/free_module_element.c:22824)
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/rings/arith.py", line 18, in <module>
from sage.rings.rational_field import QQ
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/rings/rational_field.py", line 52, in <module>
import rational
File "rational.pyx", line 70, in init sage.rings.rational
(sage/rings/rational.c:23702)
File "real_mpfr.pyx", line 1, in init sage.rings.real_mpfr
(sage/rings/real_mpfr.c:29089)
File "complex_number.pxd", line 8, in init sage.libs.mpmath.utils
(sage/libs/mpmath/utils.c:5332)
File "complex_double.pxd", line 13, in init sage.rings.complex_number
(sage/rings/complex_number.c:14336)
File "complex_double.pyx", line 88, in init sage.rings.complex_double
(sage/rings/complex_double.c:13660)
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/rings/complex_field.py", line 86, in ComplexField
C = ComplexField_class(prec)
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/rings/complex_field.py", line 175, in __init__
ParentWithGens.__init__(self, self._real_field(), ('I',), False)
File "/mn/corcaroli/d1/dagss/sage-4.3/local/lib/python2.6/site-
packages/sage/rings/complex_field.py", line 228, in _real_field
self.__real_field = real_mpfr.RealField_constructor(self._prec)
File "real_mpfr.pyx", line 247, in
sage.rings.real_mpfr.RealField_constructor (sage/rings/real_mpfr.c:3668)
TypeError: 'NoneType' object is unsubscriptable
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7934>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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