diff -r dc407f50e823 -r 60c84c5380d9 Doc/library/functions.rst
--- a/Doc/library/functions.rst	Sat Nov 26 13:50:21 2016 +0200
+++ b/Doc/library/functions.rst	Sat Nov 26 15:32:48 2016 +0100
@@ -396,8 +396,10 @@
    The *expression* argument is parsed and evaluated as a Python expression
    (technically speaking, a condition list) using the *globals* and *locals*
    dictionaries as global and local namespace.  If the *globals* dictionary is
-   present and lacks '__builtins__', the current globals are copied into *globals*
-   before *expression* is parsed.  This means that *expression* normally has full
+   present and  does not contain a value for the key '__builtins__',
+   a reference to the dictionary of the built-in module builtins is inserted
+   under that key before *expression* is parsed.
+   This means that *expression* normally has full
    access to the standard :mod:`builtins` module and restricted environments are
    propagated.  If the *locals* dictionary is omitted it defaults to the *globals*
    dictionary.  If both dictionaries are omitted, the expression is executed in the