Comments (1)
>>> def multiton(cls):
... instances = {}
... def getinstance(arg):
... if arg not in instances:
... instances[arg] = cls(arg)
... return instances[arg]
... return getinstance
...
>>> @multiton
... class MyClass():
... def __init__(self, arg):
... self.arg = arg
...
>>> import dill
>>>
>>> a = MyClass('my arg')
>>> b = dill.loads(dill.dumps(a))
>>> a
<__main__.MyClass instance at 0x10bb50e18>
>>> b
<__main__.MyClass instance at 0x10bb50ea8>
>>>
>>> a == b
False
>>>
>>> a.arg
'my arg'
>>> b.arg
'my arg'
>>> a.__class__ == b.__class__
False
>>> a.__class__
<class __main__.MyClass at 0x10b3afa78>
>>> b.__class__
<class __main__.MyClass at 0x10bb49460>
>>> import __main__ as _main_module
>>> _main_module.MyClass
<function getinstance at 0x10b3db668>
>>>
>>> MyClass
<function getinstance at 0x10b3db668>
>>>
>>> import copy
>>> copy.copy(a)
<__main__.MyClass instance at 0x10bb54fc8>
>>> copy.copy(b)
<__main__.MyClass instance at 0x10bada050>
>>> copy.copy(b) == copy.copy(a)
False
>>> copy.copy(b) == copy.copy(b)
False
>>> copy.deepcopy(b) == copy.deepcopy(b)
False
>>> copy.deepcopy(a) == copy.deepcopy(a)
False
dill
doesn't seem to be doing anything wrong here, it's just not a terribly satisfactory case.
from dill.
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from dill.