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models: Simplify how we add __weakref__ to slots

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This commit is contained in:
Thomas Adamcik 2015-05-04 22:39:36 +02:00
parent 7f6809aebb
commit 5989d3a017
1 changed files with 1 additions and 7 deletions
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8
mopidy/models/immutable.py
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@ -1,7 +1,6 @@
from __future__ import absolute_import, unicode_literals from __future__ import absolute_import, unicode_literals
import copy import copy
import inspect
import itertools import itertools
import weakref import weakref
@ -27,12 +26,6 @@ class ImmutableObjectMeta(type):
attrs['__slots__'] = list(attrs.get('__slots__', [])) attrs['__slots__'] = list(attrs.get('__slots__', []))
attrs['__slots__'].extend(['_hash'] + fields.values()) attrs['__slots__'].extend(['_hash'] + fields.values())
for ancestor in [b for base in bases for b in inspect.getmro(base)]:
if '__weakref__' in getattr(ancestor, '__slots__', []):
break
else:
attrs['__slots__'].append('__weakref__')
return super(ImmutableObjectMeta, cls).__new__(cls, name, bases, attrs) return super(ImmutableObjectMeta, cls).__new__(cls, name, bases, attrs)
def __call__(cls, *args, **kwargs): # noqa: N805 def __call__(cls, *args, **kwargs): # noqa: N805
@ -56,6 +49,7 @@ class ImmutableObject(object):
""" """
__metaclass__ = ImmutableObjectMeta __metaclass__ = ImmutableObjectMeta
__slots__ = ['__weakref__']
def __init__(self, *args, **kwargs): def __init__(self, *args, **kwargs):
for key, value in kwargs.items(): for key, value in kwargs.items():