Bug #1163325: "special" decimals aren't hashable
diff --git a/Lib/decimal.py b/Lib/decimal.py
index 7f71b83..fb11e8f 100644
--- a/Lib/decimal.py
+++ b/Lib/decimal.py
@@ -728,6 +728,10 @@
# Decimal integers must hash the same as the ints
# Non-integer decimals are normalized and hashed as strings
# Normalization assures that hast(100E-1) == hash(10)
+ if self._is_special:
+ if self._isnan():
+ raise TypeError('Cannot hash a NaN value.')
+ return hash(str(self))
i = int(self)
if self == Decimal(i):
return hash(i)
diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py
index f523a72..fc1e048 100644
--- a/Lib/test/test_decimal.py
+++ b/Lib/test/test_decimal.py
@@ -811,6 +811,9 @@
hash(Decimal(23))
#the same hash that to an int
self.assertEqual(hash(Decimal(23)), hash(23))
+ self.assertRaises(TypeError, hash, Decimal('NaN'))
+ self.assert_(hash(Decimal('Inf')))
+ self.assert_(hash(Decimal('-Inf')))
def test_min_and_max_methods(self):