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-rw-r--r--Lib/unittest.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/unittest.py b/Lib/unittest.py
index b5a1a4b8b5..09c6ca97c8 100644
--- a/Lib/unittest.py
+++ b/Lib/unittest.py
@@ -425,6 +425,9 @@ class TestSuite:
def __ne__(self, other):
return not self == other
+ # Can't guarantee hash invariant, so flag as unhashable
+ __hash__ = None
+
def __iter__(self):
return iter(self._tests)