Issue 4998: restore utility of __slots__ on Fraction.
(forward merge of r68813).
diff --git a/Lib/numbers.py b/Lib/numbers.py
index 827c253..82960f0 100644
--- a/Lib/numbers.py
+++ b/Lib/numbers.py
@@ -15,6 +15,8 @@
If you just want to check if an argument x is a number, without
caring what kind, use isinstance(x, Number).
"""
+ __slots__ = ()
+
# Concrete numeric types must provide their own hash implementation
__hash__ = None
@@ -38,6 +40,8 @@
type as described below.
"""
+ __slots__ = ()
+
@abstractmethod
def __complex__(self):
"""Return a builtin complex instance. Called for complex(self)."""
@@ -152,6 +156,8 @@
Real also provides defaults for the derived operations.
"""
+ __slots__ = ()
+
@abstractmethod
def __float__(self):
"""Any Real can be converted to a native float object.
@@ -264,6 +270,8 @@
class Rational(Real):
""".numerator and .denominator should be in lowest terms."""
+ __slots__ = ()
+
@abstractproperty
def numerator(self):
raise NotImplementedError
@@ -287,6 +295,8 @@
class Integral(Rational):
"""Integral adds a conversion to int and the bit-string operations."""
+ __slots__ = ()
+
@abstractmethod
def __int__(self):
"""int(self)"""