Issue #21545: Add .pop example and tweak comment about pure mutation methods.
Patch prepared by David Harrigan.
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index 28e6ad7..02ba115 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -99,6 +99,15 @@
>>> a.sort()
>>> a
[-1, 1, 66.25, 333, 333, 1234.5]
+ >>> a.pop()
+ 1234.5
+ >>> a
+ [-1, 1, 66.25, 333, 333]
+
+You might have noticed that methods like ``insert``, ``remove`` or ``sort`` that
+only modify the list have no return value printed -- they return the default
+``None``. [1]_ This is a design principle for all mutable data structures in
+Python.
.. _tut-lists-as-stacks:
diff --git a/Misc/ACKS b/Misc/ACKS
index c8c3880..9ae3341 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -506,6 +506,7 @@
Lynda Hardman
Derek Harland
Jason Harper
+David Harrigan
Brian Harring
Jonathan Hartley
Travis B. Hartwell