Merge pull request #9521 from eric-wieser/numbers.Number

BUG: Make issubclass(np.number, numbers.Number) return true

2 files changed, 14 insertions, 0 deletions

diff --git a/numpy/core/numerictypes.py b/numpy/core/numerictypes.py
index 275bb3fea..5a8d9abe0 100644
--- a/numpy/core/numerictypes.py
+++ b/numpy/core/numerictypes.py
@@ -952,6 +952,7 @@ def _register_types():
     numbers.Integral.register(integer)
     numbers.Complex.register(inexact)
     numbers.Real.register(floating)
+    numbers.Number.register(number)
 
 _register_types()
 
diff --git a/numpy/core/tests/test_abc.py b/numpy/core/tests/test_abc.py
index 515a76a21..77cf40620 100644
--- a/numpy/core/tests/test_abc.py
+++ b/numpy/core/tests/test_abc.py
@@ -3,9 +3,22 @@ from __future__ import division, absolute_import, print_function
 from numpy.testing import assert_, run_module_suite
 
 import numbers
+
+import numpy as np
 from numpy.core.numerictypes import sctypes
 
 class TestABC(object):
+    def test_abstract(self):
+        assert_(issubclass(np.number, numbers.Number))
+
+        assert_(issubclass(np.inexact, numbers.Complex))
+        assert_(issubclass(np.complexfloating, numbers.Complex))
+        assert_(issubclass(np.floating, numbers.Real))
+
+        assert_(issubclass(np.integer, numbers.Integral))
+        assert_(issubclass(np.signedinteger, numbers.Integral))
+        assert_(issubclass(np.unsignedinteger, numbers.Integral))
+
     def test_floats(self):
         for t in sctypes['float']:
             assert_(isinstance(t(), numbers.Real),