[Python-checkins] bpo-38558: Mention `:=` in conditions tutorial (GH-16919)

[Zachary Ware]

https://github.com/python/cpython/commit/cb2cf06b0aad1851f54999497c1b50c381d1fdd8
commit: cb2cf06b0aad1851f54999497c1b50c381d1fdd8
branch: master
author: Ammar Askar <ammar at ammaraskar.com>
committer: Zachary Ware <zach at python.org>
date: 2019-10-25T17:20:05-05:00
summary:

bpo-38558: Mention `:=` in conditions tutorial (GH-16919)

files:
M Doc/tutorial/datastructures.rst

diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst
index a0d56274fd7e8..2f7afb088f3bb 100644
--- a/Doc/tutorial/datastructures.rst
+++ b/Doc/tutorial/datastructures.rst
@@ -675,10 +675,10 @@ to a variable.  For example, ::
    >>> non_null
    'Trondheim'
 
-Note that in Python, unlike C, assignment cannot occur inside expressions. C
-programmers may grumble about this, but it avoids a common class of problems
-encountered in C programs: typing ``=`` in an expression when ``==`` was
-intended.
+Note that in Python, unlike C, assignment inside expressions must be done
+explicitly with the walrus operator ``:=``. This avoids a common class of
+problems encountered in C programs: typing ``=`` in an expression when ``==``
+was intended.
 
 
 .. _tut-comparing: