Merge pull request #17150 from eric-wieser/cython-isinstance

ENH: Add support for the abstract scalars to cython code

2 files changed, 12 insertions, 0 deletions

diff --git a/numpy/core/tests/examples/checks.pyx b/numpy/core/tests/examples/checks.pyx
index ecf0ad3fa..151979db7 100644
--- a/numpy/core/tests/examples/checks.pyx
+++ b/numpy/core/tests/examples/checks.pyx
@@ -24,3 +24,7 @@ def get_td64_value(obj):
 
 def get_dt64_unit(obj):
     return cnp.get_datetime64_unit(obj)
+
+
+def is_integer(obj):
+    return isinstance(obj, (cnp.integer, int))
diff --git a/numpy/core/tests/test_cython.py b/numpy/core/tests/test_cython.py
index 63524b269..bfdb692d7 100644
--- a/numpy/core/tests/test_cython.py
+++ b/numpy/core/tests/test_cython.py
@@ -126,3 +126,11 @@ def test_get_datetime64_unit(install_temp):
     result = checks.get_dt64_unit(td64)
     expected = 5
     assert result == expected
+
+
+def test_abstract_scalars(install_temp):
+    import checks
+
+    assert checks.is_integer(1)
+    assert checks.is_integer(np.int8(1))
+    assert checks.is_integer(np.uint64(1))