diff options
Diffstat (limited to 'Lib/fractions.py')
| -rw-r--r-- | Lib/fractions.py | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/Lib/fractions.py b/Lib/fractions.py index 51e67e22ea..8be52d2db8 100644 --- a/Lib/fractions.py +++ b/Lib/fractions.py @@ -528,12 +528,8 @@ class Fraction(numbers.Rational): return Fraction(round(self / shift) * shift) def __hash__(self): - """hash(self) + """hash(self)""" - Tricky because values that are exactly representable as a - float must have the same hash as that float. - - """ # XXX since this method is expensive, consider caching the result # In order to make sure that the hash of a Fraction agrees @@ -550,7 +546,8 @@ class Fraction(numbers.Rational): hash_ = _PyHASH_INF else: hash_ = abs(self._numerator) * dinv % _PyHASH_MODULUS - return hash_ if self >= 0 else -hash_ + result = hash_ if self >= 0 else -hash_ + return -2 if result == -1 else result def __eq__(a, b): """a == b""" |