Expand the LBYL glossary entry.
diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index a051fe8..4958d3b 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -392,6 +392,12 @@
the :term:`EAFP` approach and is characterized by the presence of many
:keyword:`if` statements.
+ In a multi-threaded environment, the LBYL approach can risk introducing a
+ race condition between "the looking" and "the leaping". For example, the
+ code, ``if key in mapping: return mapping[key]`` can fail if another
+ thread removes *key* from *mapping* after the test, but before the lookup.
+ This issue can be solved with locks or by using the EAFP approach.
+
list
A built-in Python :term:`sequence`. Despite its name it is more akin
to an array in other languages than to a linked list since access to
diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst
index 488ad3b..bb3053d 100644
--- a/Doc/whatsnew/3.2.rst
+++ b/Doc/whatsnew/3.2.rst
@@ -112,8 +112,6 @@
>>> cmd = 'deploy sneezy.example.com sleepy.example.com -u skycaptain'
>>> result = parser.parse_args(cmd.split())
-
- >>> # parsed variables are stored in the attributes
>>> result.action
'deploy'
>>> result.targets