为什么Theano测试因许多“ KnownFailureTest”而失败？

Theano在执行测试时失败了：

python -c "import theano; theano.test();"

如果这些是已知的故障，它是否还应该通过？当我测试其他库的IE时，有时会触发KnownFailures，但总体测试仍通过“ OK”（但仍会记录KnownFails和Skipped测试）。

我的猜测是可以的，并且测试确实是“通过”的，但是由于我正在按照deeplearning.net教程进行全新安装，并且遇到此错误，因此我认为其他人也可能有这个问题，而且在Google等上进行搜索并没有真正的帮助。

原谅错误代码转储，我确定没有人需要阅读所有内容，但是如果有人有这个问题，可以在这里作为参考。这是测试结束时的错误：

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ERROR: test_none (theano.compile.tests.test_function_module.T_function)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/compile/tests/test_function_module.py", line 42, in test_none
    raise KnownFailureTest('See #254: Using None as function output leads to [] return value')
KnownFailureTest: See #254: Using None as function output leads to [] return value

======================================================================
ERROR: test002_generator_one_scalar_output (theano.sandbox.scan_module.tests.test_scan.TestScan)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/sandbox/scan_module/tests/test_scan.py", line 474, in test002_generator_one_scalar_output
    raise KnownFailureTest('Work-in-progress sandbox ScanOp is not fully '
KnownFailureTest: Work-in-progress sandbox ScanOp is not fully functional yet

======================================================================
ERROR: test003_one_sequence_one_output_and_weights (theano.sandbox.scan_module.tests.test_scan.TestScan)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/sandbox/scan_module/tests/test_scan.py", line 512, in test003_one_sequence_one_output_and_weights
    raise KnownFailureTest('Work-in-progress sandbox ScanOp is not fully '
KnownFailureTest: Work-in-progress sandbox ScanOp is not fully functional yet

======================================================================
ERROR: test_alloc_inputs2 (theano.scan_module.tests.test_scan.T_Scan)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/scan_module/tests/test_scan.py", line 2844, in test_alloc_inputs2
    "This tests depends on an optimization for scan "
KnownFailureTest: This tests depends on an optimization for scan that has not been implemented yet.

======================================================================
ERROR: test_infershape_seq_shorter_nsteps (theano.scan_module.tests.test_scan.T_Scan)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/scan_module/tests/test_scan.py", line 3040, in test_infershape_seq_shorter_nsteps
    raise KnownFailureTest('This is a generic problem with infershape'
KnownFailureTest: This is a generic problem with infershape that has to be discussed and figured out

======================================================================
ERROR: test_outputs_info_not_typed (theano.scan_module.tests.test_scan.T_Scan)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: This test fails because not typed outputs_info are always gived the smallest dtype. There is no upcast of outputs_info in scan for now.

======================================================================
ERROR: test_arithmetic_cast (theano.tensor.tests.test_basic.test_arithmetic_cast)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/tensor/tests/test_basic.py", line 5583, in test_arithmetic_cast
    raise KnownFailureTest('Known issue with '
KnownFailureTest: Known issue with numpy >= 1.6.x see #761

======================================================================
ERROR: test_abs_grad (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_complex_grads (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_mul_mixed (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_mul_mixed0 (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_mul_mixed1 (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_polar_grads (theano.tensor.tests.test_complex.TestRealImag)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: test_gradient (theano.tensor.tests.test_fourier.TestFourier)
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/numpy/testing/decorators.py", line 213, in knownfailer
    raise KnownFailureTest(msg)
KnownFailureTest: Complex grads not enabled, see #178

======================================================================
ERROR: theano.tensor.tests.test_opt.test_log_add
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/lib/python2.7/dist-packages/theano/tensor/tests/test_opt.py", line 1508, in test_log_add
    raise KnownFailureTest(('log(add(exp)) is not stabilized when adding '
KnownFailureTest: log(add(exp)) is not stabilized when adding more than 2 elements, see #623

======================================================================
ERROR: Currently Theano enable the constant_folding optimization before stabilization optimization.
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Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/usr/local/lib/python2.7/dist-packages/theano/tensor/tests/test_opt.py", line 3068, in test_constant_get_stabilized
    "Theano optimizes constant before stabilization. "
KnownFailureTest: Theano optimizes constant before stabilization. This breaks stabilization optimization in some cases. See #504.

======================================================================
ERROR: test_dot (theano.tests.test_rop.test_RopLop)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/tests/test_rop.py", line 277, in test_dot
    self.check_rop_lop(tensor.dot(self.x, W), self.in_shape)
  File "/usr/local/lib/python2.7/dist-packages/theano/tests/test_rop.py", line 191, in check_rop_lop
    raise KnownFailureTest("Rop doesn't handle non-differentiable "
KnownFailureTest: Rop doesn't handle non-differentiable inputs correctly. Bug exposed by fixing Add.grad method.

======================================================================
ERROR: test_elemwise0 (theano.tests.test_rop.test_RopLop)
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Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/theano/tests/test_rop.py", line 280, in test_elemwise0
    self.check_rop_lop((self.x + 1) ** 2, self.in_shape)
  File "/usr/local/lib/python2.7/dist-packages/theano/tests/test_rop.py", line 191, in check_rop_lop
    raise KnownFailureTest("Rop doesn't handle non-differentiable "
KnownFailureTest: Rop doesn't handle non-differentiable inputs correctly. Bug exposed by fixing Add.grad method.

----------------------------------------------------------------------
Ran 2441 tests in 807.791s

FAILED (errors=18)

谢谢！