Merge pull request #2342 from gabrieldemarmiesse/test_working_with_python_arrays_1

Added test of a piece of code in "working with python arrays".

docs/examples/tutorial/array/safe_usage.pyx

+from cpython cimport array
+import array
+cdef array.array a = array.array('i', [1, 2, 3])
+cdef int[:] ca = a
+
+print(ca[0])

docs/src/tutorial/array.rst

@@ -18,14 +18,7 @@ module is built into both Python and Cython.
 Safe usage with memory views
 ----------------------------
 
-::
-
-    from cpython cimport array
-    import array
-    cdef array.array a = array.array('i', [1, 2, 3])
-    cdef int[:] ca = a
-
-    print(ca[0])
+.. literalinclude:: ../../examples/tutorial/array/safe_usage.pyx
 
 NB: the import brings the regular Python array object into the namespace
 while the cimport adds functions accessible from Cython.