Error checking was too aggressive (reported by Chris Tismer)
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 52bae9a..0b0b029 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -29,6 +29,7 @@
self.assertRaises(ValueError, namedtuple, 'abc', 'efg efg ghi') # duplicate field
namedtuple('Point0', 'x1 y2') # Verify that numbers are allowed in names
+ namedtuple('_', '_ __ ___') # Verify that underscores are allowed
def test_instance(self):
Point = namedtuple('Point', 'x y')