diff --git a/Lib/ast.py b/Lib/ast.py
index 72237ed9085..fb5adac8fd9 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -40,8 +40,8 @@ def literal_eval(node_or_string):
     """
     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, bytes, numbers, tuples, lists, dicts,
+    sets, booleans, and None.
     """
     _safe_names = {'None': None, 'True': True, 'False': False}
     if isinstance(node_or_string, str):
diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index 685c84ea5ef..3b0ca85fbbc 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -694,7 +694,6 @@ def get_platform():
                     m = re.search(
                             r'<key>ProductUserVisibleVersion</key>\s*' +
                             r'<string>(.*?)</string>', f.read())
-                    f.close()
                     if m is not None:
                         macrelease = '.'.join(m.group(1).split('.')[:2])
                     # else: fall back to the default behaviour
diff --git a/Lib/trace.py b/Lib/trace.py
index 53c6150fd40..850369b9ff4 100644
--- a/Lib/trace.py
+++ b/Lib/trace.py
@@ -688,7 +688,7 @@ def main(argv=None):
 
     for opt, val in opts:
         if opt == "--help":
-            usage(sys.stdout)
+            _usage(sys.stdout)
             sys.exit(0)
 
         if opt == "--version":