1 files changed, 28 insertions, 0 deletions
diff --git a/numpy/lib/utils.py b/numpy/lib/utils.py
new file mode 100644
index 000000000..88a22ab21
--- /dev/null
+++ b/numpy/lib/utils.py
@@ -0,0 +1,28 @@
+from numpy.core.numerictypes import obj2dtype
+
+__all__ = ['issubclass_', 'get_numpy_include', 'issubdtype']
+
+def issubclass_(arg1, arg2):
+    try:
+        return issubclass(arg1, arg2)
+    except TypeError:
+        return False
+
+def issubdtype(arg1, arg2):
+    return issubclass(obj2dtype(arg1), obj2dtype(arg2))
+    
+def get_numpy_include():
+    """Return the directory in the package that contains the numpy/*.h header 
+    files.
+    
+    Extension modules that need to compile against numpy.base should use this
+    function to locate the appropriate include directory. Using distutils:
+    
+      import numpy
+      Extension('extension_name', ...
+                include_dirs=[numpy.get_numpy_include()])
+    """
+    from numpy.distutils.misc_util import get_numpy_include_dirs
+    include_dirs = get_numpy_include_dirs()
+    assert len(include_dirs)==1,`include_dirs`
+    return include_dirs[0]