Allow set literals in literal_eval().
diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst
index 9bf374f..43c9add 100644
--- a/Doc/library/ast.rst
+++ b/Doc/library/ast.rst
@@ -119,12 +119,15 @@
Safely evaluate an expression node or a string containing a Python
expression. The string or node provided may only consist of the following
- Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
- and ``None``.
+ Python literal structures: strings, numbers, tuples, lists, dicts, sets,
+ booleans, and ``None``.
This can be used for safely evaluating strings containing Python expressions
from untrusted sources without the need to parse the values oneself.
+ .. versionchanged:: 3.2
+ Now allows set literals.
+
.. function:: get_docstring(node, clean=True)
diff --git a/Lib/ast.py b/Lib/ast.py
index 0b8baf7..092f077 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -58,6 +58,8 @@
return tuple(map(_convert, node.elts))
elif isinstance(node, List):
return list(map(_convert, node.elts))
+ elif isinstance(node, Set):
+ return set(map(_convert, node.elts))
elif isinstance(node, Dict):
return dict((_convert(k), _convert(v)) for k, v
in zip(node.keys, node.values))
diff --git a/Misc/NEWS b/Misc/NEWS
index b72e78a..dbfc4c5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -470,7 +470,9 @@
Library
-------
-- Issue #9164: Ensure that sysconfig handles duplicate -arch flags in CFLAGS
+- ``ast.literal_eval()`` now allows set literals.
+
+- Issue #9164: Ensure that sysconfig handles duplicate -arch flags in CFLAGS.
- Issue #7646: The fnmatch pattern cache no longer grows without bound.