bpo-38521: Fix error in NormalDist.__eq__() (GH-16840)
diff --git a/Lib/statistics.py b/Lib/statistics.py
index 0d747b3..461ffae 100644
--- a/Lib/statistics.py
+++ b/Lib/statistics.py
@@ -1092,7 +1092,7 @@
"Two NormalDist objects are equal if their mu and sigma are both equal."
if not isinstance(x2, NormalDist):
return NotImplemented
- return (x1._mu, x2._sigma) == (x2._mu, x2._sigma)
+ return x1._mu == x2._mu and x1._sigma == x2._sigma
def __hash__(self):
"NormalDist objects hash equal if their mu and sigma are both equal."
diff --git a/Lib/test/test_statistics.py b/Lib/test/test_statistics.py
index af26473..bebd9b5 100644
--- a/Lib/test/test_statistics.py
+++ b/Lib/test/test_statistics.py
@@ -2651,9 +2651,13 @@
nd2 = NormalDist(2, 4)
nd3 = NormalDist()
nd4 = NormalDist(2, 4)
+ nd5 = NormalDist(2, 8)
+ nd6 = NormalDist(8, 4)
self.assertNotEqual(nd1, nd2)
self.assertEqual(nd1, nd3)
self.assertEqual(nd2, nd4)
+ self.assertNotEqual(nd2, nd5)
+ self.assertNotEqual(nd2, nd6)
# Test NotImplemented when types are different
class A: