Moved the setup.py to the examples directory.

docs/examples/userguide/parallelism/setup.py

+from distutils.core import setup
+from distutils.extension import Extension
+from Cython.Build import cythonize
+
+ext_modules = [
+    Extension(
+        "hello",
+        ["hello.pyx"],
+        extra_compile_args=['-fopenmp'],
+        extra_link_args=['-fopenmp'],
+    )
+]
+
+setup(
+    name='hello-parallel-world',
+    ext_modules=cythonize(ext_modules),
+)

docs/src/userguide/parallelism.rst

@@ -157,25 +157,9 @@ Compiling
 =========
 
 To actually use the OpenMP support, you need to tell the C or C++ compiler to
-enable OpenMP.  For gcc this can be done as follows in a setup.py::
-
-    from distutils.core import setup
-    from distutils.extension import Extension
-    from Cython.Build import cythonize
-
-    ext_modules = [
-        Extension(
-            "hello",
-            ["hello.pyx"],
-            extra_compile_args=['-fopenmp'],
-            extra_link_args=['-fopenmp'],
-        )
-    ]
-
-    setup(
-        name='hello-parallel-world',
-        ext_modules=cythonize(ext_modules),
-    )
+enable OpenMP.  For gcc this can be done as follows in a setup.py:
+
+.. literalinclude:: ../../examples/userguide/parallelism/setup.py
 
 For Microsoft Visual C++ compiler, use ``'/openmp'`` instead of ``'-fopenmp'``.