[Python-checkins] cpython: Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address.
serhiy.storchaka
python-checkins at python.org
Sat Mar 7 19:09:13 CET 2015
https://hg.python.org/cpython/rev/88a5c1698ca4
changeset: 94894:88a5c1698ca4
user: Serhiy Storchaka <storchaka at gmail.com>
date: Sat Mar 07 20:08:34 2015 +0200
summary:
Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address.
files:
Lib/ipaddress.py | 25 ++++++++++++-------------
Lib/test/test_ipaddress.py | 7 +++++++
Misc/NEWS | 2 ++
3 files changed, 21 insertions(+), 13 deletions(-)
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -386,6 +386,8 @@
"""The mother class."""
+ __slots__ = ()
+
@property
def exploded(self):
"""Return the longhand version of the IP address as a string."""
@@ -543,6 +545,8 @@
used by single IP addresses.
"""
+ __slots__ = ()
+
def __int__(self):
return self._ip
@@ -1051,6 +1055,8 @@
"""
+ __slots__ = ()
+ _version = 4
# Equivalent to 255.255.255.255 or 32 bits of 1's.
_ALL_ONES = (2**IPV4LENGTH) - 1
_DECIMAL_DIGITS = frozenset('0123456789')
@@ -1063,9 +1069,6 @@
# when constructed (see _make_netmask()).
_netmask_cache = {}
- def __init__(self, address):
- self._version = 4
-
def _explode_shorthand_ip_string(self):
return str(self)
@@ -1243,6 +1246,8 @@
"""Represent and manipulate single IPv4 Addresses."""
+ __slots__ = ('_ip', '__weakref__')
+
def __init__(self, address):
"""
@@ -1259,8 +1264,6 @@
AddressValueError: If ipaddress isn't a valid IPv4 address.
"""
- _BaseV4.__init__(self, address)
-
# Efficient constructor from integer.
if isinstance(address, int):
self._check_int_address(address)
@@ -1485,8 +1488,6 @@
supplied.
"""
-
- _BaseV4.__init__(self, address)
_BaseNetwork.__init__(self, address)
# Constructing from a packed address or integer
@@ -1590,6 +1591,8 @@
"""
+ __slots__ = ()
+ _version = 6
_ALL_ONES = (2**IPV6LENGTH) - 1
_HEXTET_COUNT = 8
_HEX_DIGITS = frozenset('0123456789ABCDEFabcdef')
@@ -1599,9 +1602,6 @@
# when constructed (see _make_netmask()).
_netmask_cache = {}
- def __init__(self, address):
- self._version = 6
-
@classmethod
def _make_netmask(cls, arg):
"""Make a (netmask, prefix_len) tuple from the given argument.
@@ -1870,6 +1870,8 @@
"""Represent and manipulate single IPv6 Addresses."""
+ __slots__ = ('_ip', '__weakref__')
+
def __init__(self, address):
"""Instantiate a new IPv6 address object.
@@ -1887,8 +1889,6 @@
AddressValueError: If address isn't a valid IPv6 address.
"""
- _BaseV6.__init__(self, address)
-
# Efficient constructor from integer.
if isinstance(address, int):
self._check_int_address(address)
@@ -2180,7 +2180,6 @@
supplied.
"""
- _BaseV6.__init__(self, address)
_BaseNetwork.__init__(self, address)
# Efficient constructor from integer or packed address
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -11,6 +11,7 @@
import operator
import pickle
import ipaddress
+import weakref
class BaseTestCase(unittest.TestCase):
@@ -259,6 +260,9 @@
def test_pickle(self):
self.pickle_test('192.0.2.1')
+ def test_weakref(self):
+ weakref.ref(self.factory('192.0.2.1'))
+
class AddressTestCase_v6(BaseTestCase, CommonTestMixin_v6):
factory = ipaddress.IPv6Address
@@ -394,6 +398,9 @@
def test_pickle(self):
self.pickle_test('2001:db8::')
+ def test_weakref(self):
+ weakref.ref(self.factory('2001:db8::'))
+
class NetmaskTestMixin_v4(CommonTestMixin_v4):
"""Input validation on interfaces and networks is very similar"""
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -17,6 +17,8 @@
Library
-------
+- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address.
+
- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric,
not as stringified enum. Patch by Demian Brecht.
--
Repository URL: https://hg.python.org/cpython
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