Question

我已经下载了Python软件包statsmodels（使用pip）并运行测试，发现有几个失败了。测试命令是

>>> import statsmodels.api as sm
>>> sm.test()

有两个错误，一个失败：

=====================================================================
ERROR: statsmodels.sandbox.panel.test_sandwich.test_cov_cluster_2groups
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/lib/python2.7/site-packages/statsmodels/sandbox/panel/test_sandwich.py", line 30, in test_cov_cluster_2groups
    cov01, covg, covt = sw.cov_cluster_2groups(res, group, group2=time)
  File "/usr/local/lib/python2.7/site-packages/statsmodels/sandbox/panel/sandwich_covariance.py", line 555, in cov_cluster_2groups
    group_intersection = Group(group)
  File "/usr/local/lib/python2.7/site-packages/statsmodels/tools/grouputils.py", line 182, in __init__
    uni, uni_idx, uni_inv = combine_indices(group)
  File "/usr/local/lib/python2.7/site-packages/statsmodels/tools/grouputils.py", line 60, in combine_indices
    return_inverse=True)
  File "/usr/local/lib/python2.7/site-packages/numpy/lib/arraysetops.py", line 178, in unique
perm = ar.argsort(kind='mergesort')
TypeError: requested sort not available for type

======================================================================
ERROR: statsmodels.tsa.base.tests.test_datetools.test_infer_freq
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
self.test(*self.arg)
  File "/usr/local/lib/python2.7/site-packages/statsmodels/tsa/base/tests/test_datetools.py", line 63, in test_infer_freq
    npt.assert_string_equal(_infer_freq(b), 'B')
  File "/usr/local/lib/python2.7/site-packages/statsmodels/tsa/base/datetools.py", line 234, in _infer_freq
    elif delta >= timedelta(28*nobs) and delta <= timedelta(31*nobs):
TypeError: ufunc 'greater_equal' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule 'safe'

======================================================================
FAIL: test_monotone_fn_inverter (statsmodels.distributions.tests.test_ecdf.TestDistributions)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/statsmodels/distributions/tests/test_ecdf.py", line 41, in test_monotone_fn_inverter
    npt.assert_array_equal(f.y, x[::1])
  File "/usr/local/lib/python2.7/site-packages/numpy/testing/utils.py", line 707, in assert_array_equal
    verbose=verbose, header='Arrays are not equal')
  File "/usr/local/lib/python2.7/site-packages/numpy/testing/utils.py", line 636, in assert_array_compare
    raise AssertionError(msg)
AssertionError: 
Arrays are not equal

(mismatch 100.0%)
 x: array([ 15.,  14.,  13.,  12.,  11.,  10.,   9.,   8.,   7.,   6.])
 y: array([ 6,  7,  8,  9, 10, 11, 12, 13, 14, 15])

----------------------------------------------------------------------
Ran 1454 tests in 67.411s

其他可能有用的信息：

statsmodel v0.4.0（也尝试v0.5.0）
numpy v1.6.2
scipy v0.10.1
所有这些包都是pip'd

python v2.7.3

brew install python（即不是OSX本机python）。
我也提到了其他一些软件包：joblib v0.6.4，nose v1.1.2和patsy v0.1.0。测试需要Nose，patsy需要import statsmodels.api。测试套件还抱怨并行运行需要joblib。

我不确定前两个错误是什么，失败看起来有点奇怪，有点像实现改变或者什么......但我怀疑statsmodels的人/ gals之前运行过他们的测试他们称之为一天:)那么这里发生了什么？

Answer 1

请尝试使用最新版本http://pypi.python.org/pypi/statsmodels/0.4.3

据我记忆，所有这些错误都已修复。

第一个错误是1.6.2中numpy行为的变化。

我认为，第二个问题与日期时间处理的变化有关，转换为在较新的pandas版本中使用新的numpy dtypes。

最后一次是测试中的错误。

邮件列表或问题跟踪器可能是报告这些测试失败的更好地方： http://groups.google.com/group/pystatsmodels https://github.com/statsmodels/statsmodels/issues

python包statsmodels的测试失败

1 个答案: