[Python-checkins] r69547 - in python/branches/py3k: Lib/numbers.py Lib/test/test_fractions.py Misc/NEWS
mark.dickinson
python-checkins at python.org
Thu Feb 12 18:58:37 CET 2009
Author: mark.dickinson
Date: Thu Feb 12 18:58:36 2009
New Revision: 69547
Log:
Issue 4998: restore utility of __slots__ on Fraction.
(forward merge of r68813).
Modified:
python/branches/py3k/Lib/numbers.py
python/branches/py3k/Lib/test/test_fractions.py
python/branches/py3k/Misc/NEWS
Modified: python/branches/py3k/Lib/numbers.py
==============================================================================
--- python/branches/py3k/Lib/numbers.py (original)
+++ python/branches/py3k/Lib/numbers.py Thu Feb 12 18:58:36 2009
@@ -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)"""
Modified: python/branches/py3k/Lib/test/test_fractions.py
==============================================================================
--- python/branches/py3k/Lib/test/test_fractions.py (original)
+++ python/branches/py3k/Lib/test/test_fractions.py Thu Feb 12 18:58:36 2009
@@ -407,6 +407,11 @@
self.assertEqual(id(r), id(copy(r)))
self.assertEqual(id(r), id(deepcopy(r)))
+ def test_slots(self):
+ # Issue 4998
+ r = F(13, 7)
+ self.assertRaises(AttributeError, setattr, r, 'a', 10)
+
def test_main():
run_unittest(FractionTest, GcdTest)
Modified: python/branches/py3k/Misc/NEWS
==============================================================================
--- python/branches/py3k/Misc/NEWS (original)
+++ python/branches/py3k/Misc/NEWS Thu Feb 12 18:58:36 2009
@@ -163,6 +163,10 @@
Library
-------
+- Issue #4998: The memory saving effect of __slots__ had been lost on Fractions
+ which inherited from numbers.py which did not have __slots__ defined. The
+ numbers hierarchy now has its own __slots__ declarations.
+
- Issue #4631: Fix urlopen() result when an HTTP response uses chunked
encoding.
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