Issue27203 - Fix doctests Doc/faq/programming.rst.

Patch contributed by Jelle Zijlstra.

Doc/faq/programming.rst

@@ -1171,16 +1171,28 @@ You probably tried to make a multidimensional array like this::
 
    >>> A = [[None] * 2] * 3
 
-This looks correct if you print it::
+This looks correct if you print it:
+
+.. testsetup::
+
+   A = [[None] * 2] * 3
+
+.. doctest::
 
    >>> A
    [[None, None], [None, None], [None, None]]
 
 But when you assign a value, it shows up in multiple places:
 
-  >>> A[0][0] = 5
-  >>> A
-  [[5, None], [5, None], [5, None]]
+.. testsetup::
+
+   A = [[None] * 2] * 3
+
+.. doctest::
+
+   >>> A[0][0] = 5
+   >>> A
+   [[5, None], [5, None], [5, None]]
 
 The reason is that replicating a list with ``*`` doesn't create copies, it only
 creates references to the existing objects.  The ``*3`` creates a list
@@ -1664,9 +1676,9 @@ address, it happens frequently that after an object is deleted from memory, the
 next freshly created object is allocated at the same position in memory.  This
 is illustrated by this example:
 
->>> id(1000)
+>>> id(1000) # doctest: +SKIP
 13901272
->>> id(2000)
+>>> id(2000) # doctest: +SKIP
 13901272
 
 The two ids belong to different integer objects that are created before, and
@@ -1675,9 +1687,9 @@ objects whose id you want to examine are still alive, create another reference
 to the object:
 
 >>> a = 1000; b = 2000
->>> id(a)
+>>> id(a) # doctest: +SKIP
 13901272
->>> id(b)
+>>> id(b) # doctest: +SKIP
 13891296