edited serialize function
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@@ -7,6 +7,7 @@ class FlyweightMeta(type):
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def __new__(mcs, name, bases, attrs):
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"""
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Override class construction to add 'pool' attribute to classes dict.
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@param name: The name of the class.
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@param bases: Base classes of the class.
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@param attrs: Attributes of the class.
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@@ -16,15 +17,16 @@ class FlyweightMeta(type):
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return super(FlyweightMeta, mcs).__new__(mcs, name, bases, attrs)
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@staticmethod
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def _serialize_params(cls, *args, **kwargs):
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def _serialize(cls, *args, **kwargs):
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"""
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Serialize input parameters to a key.
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Simple implementation is just to serialize it as a string
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Serialize arguments to a string representation.
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"""
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args_list = [str(arg) for arg in args]
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args_list.extend([str(kwargs), cls.__name__])
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key = ''.join(args_list)
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return key
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serialized_args = [str(arg) for arg in args]
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serialized_kwargs = [str(kwargs), cls.__name__]
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serialized_args.extend(serialized_kwargs)
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return ''.join(serialized_args)
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def __call__(cls, *args, **kwargs):
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"""
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@@ -34,7 +36,7 @@ class FlyweightMeta(type):
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@param kwargs: Keyword arguments for class instantiation.
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@return: A new instance of the class.
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"""
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key = FlyweightMeta._serialize_params(cls, *args, **kwargs)
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key = FlyweightMeta._serialize(cls, *args, **kwargs)
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pool = getattr(cls, 'pool', {})
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instance = pool.get(key)
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