Close issue24840: Enum._value_ is queried for bool(); original patch by Mike Lundy

Lib/enum.py

@@ -476,6 +476,9 @@ class Enum(metaclass=EnumMeta):
     def __str__(self):
         return "%s.%s" % (self.__class__.__name__, self._name_)
 
+    def __bool__(self):
+        return bool(self._value_)
+
     def __dir__(self):
         added_behavior = [
                 m

Lib/test/test_enum.py

@@ -270,6 +270,13 @@ class TestEnum(unittest.TestCase):
             class Wrong(Enum):
                 _any_name_ = 9
 
+    def test_bool(self):
+        class Logic(Enum):
+            true = True
+            false = False
+        self.assertTrue(Logic.true)
+        self.assertFalse(Logic.false)
+
     def test_contains(self):
         Season = self.Season
         self.assertIn(Season.AUTUMN, Season)

Misc/ACKS

@@ -877,6 +877,7 @@ Kang-Hao (Kenny) Lu
 Lukas Lueg
 Loren Luke
 Fredrik Lundh
+Mike Lundy
 Zhongyue Luo
 Mark Lutz
 Taras Lyapun