numpy - scipy.test() 失败并出现许多断言错误

标签 numpy python-3.x scipy macports

Scipy 新手。

我已经安装了 scipy 和 numpy，但是当我运行 scipy.test() 时，我遇到了很多测试失败。 我试图找到一些常见的原因，并发现了几个:

>>> import scipy
>>> scipy.test()
Running unit tests for scipy
NumPy version 1.6.2
NumPy is installed in /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/numpy
SciPy version 0.10.1
SciPy is installed in /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy
Python version 2.7.3 (default, Apr 19 2012, 00:55:09) [GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)]
nose version 1.1.2
...

AssertionError:
Arrays are not almost equal to 7 decimals
...
AssertionError:
Not equal to tolerance rtol=1e-10, atol=1e-305
...
AssertionError: 
Arrays are not almost equal to 4 decimals
...
AssertionError: 
Max |adiff|: 92783.6
Max |rdiff|: 0.353942

对我来说听起来像是 MPI 问题或其他问题，但我真的不知道。

任何帮助将不胜感激。

最好，乔纳森。

-------- 编辑 --------- 用 scipy.test(verbose=10) 尝试过。 大多数测试似乎都运行良好。 失败以错误开始。这就是我得到的:

   ERROR: Failure: DeprecationWarning (
The scipy.maxentropy module is deprecated in scipy 0.10, and scheduled to be
removed in 0.11.

If you are using some of the functionality in this module and are of the
opinion that it should be kept or moved somewhere - or you are even interested
to maintain/improve this whole module - please ask on the scipy-dev mailing
list.

The logsumexp function has already been moved to scipy.misc.)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/loader.py", line 390, in loadTestsFromName
    addr.filename, addr.module)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/importer.py", line 39, in importFromPath
    return self.importFromDir(dir_path, fqname)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/importer.py", line 86, in importFromDir
    mod = load_module(part_fqname, fh, filename, desc)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/maxentropy/__init__.py", line 19, in <module>
    DeprecationWarning)
DeprecationWarning: 
The scipy.maxentropy module is deprecated in scipy 0.10, and scheduled to be
removed in 0.11.

If you are using some of the functionality in this module and are of the
opinion that it should be kept or moved somewhere - or you are even interested
to maintain/improve this whole module - please ask on the scipy-dev mailing
list.

The logsumexp function has already been moved to scipy.misc.

======================================================================
FAIL: test_asum (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/lib/blas/tests/test_blas.py", line 58, in test_asum
    assert_almost_equal(f([3,-4,5]),12)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: 12

======================================================================
FAIL: test_dot (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/lib/blas/tests/test_blas.py", line 67, in test_dot
    assert_almost_equal(f([3,-4,5],[2,5,1]),-9)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: -9

======================================================================
FAIL: test_nrm2 (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/lib/blas/tests/test_blas.py", line 78, in test_nrm2
    assert_almost_equal(f([3,-4,5]),math.sqrt(50))
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: 7.0710678118654755

======================================================================
FAIL: test_basic.TestNorm.test_overflow
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_basic.py", line 581, in test_overflow
    assert_almost_equal(norm(a), a)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 451, in assert_almost_equal
    return assert_array_almost_equal(actual, desired, decimal, err_msg)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 846, in assert_array_almost_equal
    header=('Arrays are not almost equal to %d decimals' % decimal))
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 677, in assert_array_compare
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals

(mismatch 100.0%)
 x: array(-0.0)
 y: array([  1.00000002e+20], dtype=float32)

======================================================================
FAIL: test_basic.TestNorm.test_stable
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_basic.py", line 586, in test_stable
    assert_almost_equal(norm(a) - 1e4, 0.5)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: -10000.0
 DESIRED: 0.5

======================================================================
FAIL: test_basic.TestNorm.test_types
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_basic.py", line 568, in test_types
    assert_allclose(norm(x), np.sqrt(14), rtol=tol)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 1213, in assert_allclose
    verbose=verbose, header=header)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 677, in assert_array_compare
    raise AssertionError(msg)
AssertionError: 
Not equal to tolerance rtol=2.38419e-06, atol=0

(mismatch 100.0%)
 x: array(1.0842021724855044e-19)
 y: array(3.7416573867739413)

======================================================================
FAIL: test_asum (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_blas.py", line 99, in test_asum
    assert_almost_equal(f([3,-4,5]),12)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: 12

======================================================================
FAIL: test_dot (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_blas.py", line 109, in test_dot
    assert_almost_equal(f([3,-4,5],[2,5,1]),-9)
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: -9

======================================================================
FAIL: test_nrm2 (test_blas.TestFBLAS1Simple)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/linalg/tests/test_blas.py", line 127, in test_nrm2
    assert_almost_equal(f([3,-4,5]),math.sqrt(50))
  File "/Library/Python/2.7/site-packages/numpy/testing/utils.py", line 467, in assert_almost_equal
    raise AssertionError(msg)
AssertionError: 
Arrays are not almost equal to 7 decimals
 ACTUAL: 0.0
 DESIRED: 7.0710678118654755

----------------------------------------------------------------------
Ran 5101 tests in 56.140s


FAILED (KNOWNFAIL=12, SKIP=42, errors=1, failures=9)
<nose.result.TextTestResult run=5101 errors=1 failures=9>

我真的很抱歉地说我不知道​​这些错误意味着什么。

最佳答案

Scipy 失败似乎是由于在 OSX 上使用错误(= ABI 与 Veclib 不兼容)Fortran 编译器而导致的典型问题。 Numpy 失败很可能与这些无关——如果没有看到它们就很难说。

OSX 上二进制接口(interface)不兼容和 Fortran 编译器的困惑是不幸的，并且适用于所有 Fortran 代码，但 Scipy 开发人员不容易修复 --- 除非检测到不正确的 Fortran 编译器，否则应进行构建失败并显示一条信息性错误消息...

您可能会发现这些有用:http://projects.scipy.org/scipy/ticket/1476 http://projects.scipy.org/scipy/ticket/1496

关于numpy - scipy.test() 失败并出现许多断言错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/10797437/

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