#12017: merge with 3.1.

1 files changed, 9 insertions, 1 deletions

diff --git a/Lib/test/test_keywordonlyarg.py b/Lib/test/test_keywordonlyarg.py
index e10dfce2ad..d7f7541837 100644
--- a/Lib/test/test_keywordonlyarg.py
+++ b/Lib/test/test_keywordonlyarg.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """Unit tests for the keyword only argument specified in PEP 3102."""
 
@@ -73,6 +73,14 @@ class KeywordOnlyArgTestCase(unittest.TestCase):
         fundef3 += "lastarg):\n  pass\n"
         compile(fundef3, "<test>", "single")
 
+    def testTooManyPositionalErrorMessage(self):
+        def f(a, b=None, *, c=None):
+            pass
+        with self.assertRaises(TypeError) as exc:
+            f(1, 2, 3)
+        expected = "f() takes at most 2 positional arguments (3 given)"
+        self.assertEqual(str(exc.exception), expected)
+
     def testSyntaxErrorForFunctionCall(self):
         self.assertRaisesSyntaxError("f(p, k=1, p2)")
         self.assertRaisesSyntaxError("f(p, k1=50, *(1,2), k1=100)")