examples for cython

tutorials/cython_bubblesort_nomagic.pyx

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+
+cimport numpy as np
+cimport cython
+@cython.boundscheck(False) 
+@cython.wraparound(False)
+cpdef cython_bubblesort_nomagic(np.ndarray[long, ndim=1] inp_ary):
+    """ The Cython implementation of Bubblesort with NumPy memoryview."""
+    cdef unsigned long length, i, swapped, ele, temp
+    cdef long[:] np_ary = inp_ary
+    length = np_ary.shape[0]
+    swapped = 1
+    for i in xrange(0, length):
+        if swapped: 
+            swapped = 0
+            for ele in xrange(0, length-i-1):
+                if np_ary[ele] > np_ary[ele + 1]:
+                    temp = np_ary[ele + 1]
+                    np_ary[ele + 1] = np_ary[ele]
+                    np_ary[ele] = temp
+                    swapped = 1
+    return inp_ary

tutorials/setup.py

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+
+import numpy as np
+from distutils.core import setup
+from distutils.extension import Extension
+from Cython.Distutils import build_ext
+
+setup(
+    cmdclass = {'build_ext': build_ext},
+    ext_modules = [
+              Extension("cython_bubblesort_nomagic",
+                        ["cython_bubblesort_nomagic.pyx"],
+                        include_dirs=[np.get_include()])
+                    ]
+)