======================================================================
ERROR: test_pickle (test.test_statistics.TestNormalDistC.test_pickle) (proto=0)
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Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/Lib/test/test_statistics.py", line 3017, in test_pickle
    pickled = pickle.loads(pickle.dumps(nd, protocol=proto))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/sobolev/Desktop/cpython/Lib/copyreg.py", line 94, in _reduce_ex
    raise TypeError("a class that defines __slots__ without "
TypeError: a class that defines __slots__ without defining __getstate__ cannot be pickled

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ERROR: test_pickle (test.test_statistics.TestNormalDistC.test_pickle) (proto=1)
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Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/Lib/test/test_statistics.py", line 3017, in test_pickle
    pickled = pickle.loads(pickle.dumps(nd, protocol=proto))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/sobolev/Desktop/cpython/Lib/copyreg.py", line 94, in _reduce_ex
    raise TypeError("a class that defines __slots__ without "
TypeError: a class that defines __slots__ without defining __getstate__ cannot be pickled

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ERROR: test_pickle (test.test_statistics.TestNormalDistPython.test_pickle) (proto=0)
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Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/Lib/test/test_statistics.py", line 3017, in test_pickle
    pickled = pickle.loads(pickle.dumps(nd, protocol=proto))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/sobolev/Desktop/cpython/Lib/copyreg.py", line 94, in _reduce_ex
    raise TypeError("a class that defines __slots__ without "
TypeError: a class that defines __slots__ without defining __getstate__ cannot be pickled

======================================================================
ERROR: test_pickle (test.test_statistics.TestNormalDistPython.test_pickle) (proto=1)
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Traceback (most recent call last):
  File "/Users/sobolev/Desktop/cpython/Lib/test/test_statistics.py", line 3017, in test_pickle
    pickled = pickle.loads(pickle.dumps(nd, protocol=proto))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/sobolev/Desktop/cpython/Lib/copyreg.py", line 94, in _reduce_ex
    raise TypeError("a class that defines __slots__ without "
TypeError: a class that defines __slots__ without defining __getstate__ cannot be pickled

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Ran 2 tests in 0.007s