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# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
class SlotObject(object):
__slots__ = ("__weakref__",)
def __init__(self, **kwargs):
classes = [self.__class__]
while classes:
c = classes.pop()
if c is SlotObject:
continue
classes.extend(c.__bases__)
slots = getattr(c, "__slots__", None)
if not slots:
continue
for myattr in slots:
myvalue = kwargs.get(myattr, None)
setattr(self, myattr, myvalue)
def copy(self):
"""
Create a new instance and copy all attributes
defined from __slots__ (including those from
inherited classes).
"""
obj = self.__class__()
classes = [self.__class__]
while classes:
c = classes.pop()
if c is SlotObject:
continue
classes.extend(c.__bases__)
slots = getattr(c, "__slots__", None)
if not slots:
continue
for myattr in slots:
setattr(obj, myattr, getattr(self, myattr))
return obj
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