"""This file imports test methods from different testing modules, in thisorder:     - try importing 'pytest'    - if it fails, fallback to 'numpy.testing' Nose2 support was removed because of lacking assertWarns on py2.7. """ import sys _has_pytest = False # check if we have pytesttry:    import pytest    parametrize = pytest.mark.parametrize    assert_raises = pytest.raises    assert_warns = pytest.warns    skipTest = pytest.skip    _has_pytest = True    def run_module_suite():        import sys, pytest        pytest.main(sys.argv)except:    pass # otherwise fallback on numpy.testingif not _has_pytest:    from numpy.testing import dec, assert_raises, assert_warns    from numpy.testing import SkipTest    parametrize = dec.parametrize    def skipTest(msg):        raise SkipTest(msg)    from numpy.testing import run_module_suite # always use numpy's assert_equalimport numpyassert_equal = numpy.testing.assert_equal