Gave a shrubbery to the knights.

docs/examples/userguide/extension_types/my_module.pxd

+cdef class Shrubbery:
+    cdef int width, height

docs/examples/userguide/extension_types/shrubbery_2.pyx

+from my_module cimport Shrubbery
+
+cdef Shrubbery another_shrubbery(Shrubbery sh1):
+    cdef Shrubbery sh2
+    sh2 = Shrubbery()
+    sh2.width = sh1.width
+    sh2.height = sh1.height
+    return sh2

docs/examples/userguide/extension_types/widen_shrubbery.pyx

+from my_module cimport Shrubbery
+
+cdef widen_shrubbery(Shrubbery sh, extra_width):
+    sh.width = sh.width + extra_width

docs/src/userguide/extension_types.rst

@@ -105,21 +105,15 @@ will be very inefficient. If the attribute is private, it will not work at all
 -- the code will compile, but an attribute error will be raised at run time.
 
 The solution is to declare ``sh`` as being of type :class:`Shrubbery`, as
-follows::
+follows:
 
-    cdef widen_shrubbery(Shrubbery sh, extra_width):
-        sh.width = sh.width + extra_width
+.. literalinclude:: ../../examples/userguide/extension_types/widen_shrubbery.pyx
 
 Now the Cython compiler knows that ``sh`` has a C attribute called
 :attr:`width` and will generate code to access it directly and efficiently.
-The same consideration applies to local variables, for example,::
-
-    cdef Shrubbery another_shrubbery(Shrubbery sh1):
-        cdef Shrubbery sh2
-        sh2 = Shrubbery()
-        sh2.width = sh1.width
-        sh2.height = sh1.height
-        return sh2
+The same consideration applies to local variables, for example:
+
+.. literalinclude:: ../../examples/userguide/extension_types/shrubbery_2.pyx
 
 
 Type Testing and Casting