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20 lines
533 B
Python
20 lines
533 B
Python
import _thread
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class Singleton(object):
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_instance_lock = _thread.allocate_lock()
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def __init__(self, *args, **kwargs):
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pass
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def __new__(cls, *args, **kwargs):
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if not hasattr(cls, 'instance_dict'):
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Singleton.instance_dict = {}
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if str(cls) not in Singleton.instance_dict.keys():
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with Singleton._instance_lock:
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_instance = super().__new__(cls)
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Singleton.instance_dict[str(cls)] = _instance
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return Singleton.instance_dict[str(cls)]
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