鼻子 python27 和 sklearn答案

【问题标题】：nose python27 and sklearn鼻子 python27 和 sklearn
【发布时间】：2014-01-28 20:34:26
【问题描述】：

我已经使用 MacPorts 安装了 python27，并将 /opt/local/bin 路径添加到 PATH 变量中。当我执行which python 时，我会在/opt/local/bin 安装一个，这很好。但是，我使用easy_install 安装了nose，并且nosetests 现在安装在/usr/local/bin 中。 /opt/local/bin 中也有一个nosetests-2.7。我试过运行那个：

/opt/local/bin/nosetests-2.7  --exe sklearn

但是，经过一堆警告和成功的测试，我最终得到以下结果：

ERROR: sklearn.cluster.bicluster.tests.test_utils.test_get_submatrix
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/nose-1.3.0-py2.7.egg/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/sklearn/cluster/bicluster/tests/test_utils.py", line 43, in test_get_submatrix
    assert_true(np.all(X != -1))
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/case.py", line 422, in assertTrue
    if not expr:
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/scipy/sparse/base.py", line 183, in __bool__
    raise ValueError("The truth value of an array with more than one "
ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all().

----------------------------------------------------------------------
Ran 1715 tests in 112.607s

FAILED (SKIP=16, errors=1)

当我清楚地从 /opt/local/bin 目录运行鼻子测试时，不确定为什么要执行 File "/Library/Python/2.7/site-packages/nose-1.3.0-py2.7.egg/nose/case.py"。

对此的任何帮助将不胜感激！

更新：

结果：python -c 'import sys; print(sys.path)'

"['', '/Library/Python/2.7/site-packages/nose-1.3.0-py2.7.egg', '/Library/Python/2.7/site-packages/Theano-0.6.0 -py2.7.egg', '/Library/Python/2.7/site-packages/scipy-0.13.2-py2.7-macosx-10.8-intel.egg', '/opt/local/Library/Frameworks/Python .framework/Versions/2.7/lib/python27.zip', '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/opt/local/Library/Frameworks/Python .framework/Versions/2.7/lib/python2.7/plat-darwin', '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/opt /local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/ python2.7/lib-tk'，'/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old'，'/opt/local/Library/Frameworks/Python. framework/Versions/2.7/lib/python2.7/lib-dynload', '/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages', '/Library /Python/2.7/site-packages']"

【问题讨论】：

python -c 'import sys; print(sys.path)' 说什么？
在问题中添加了命令的结果！

标签： python scikit-learn nosetests

【解决方案1】：

在这个特定的测试中，它看起来像是一个数值稳定性问题。除非您对在该平台上使用双聚类模型特别感兴趣，否则我不会对此过于谨慎。

您也可以尝试从 git 构建当前的 scikit-learn 大师。自上次发布以来，此测试可能已经稳定（尽管我不是 100% 确定）。

【讨论】：