first commit

riku

2024-01-10 a9e8e27e0503552b7b2a99c821da732175d4f071

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def singleton(cls):
    """单例模式修饰器"""
    __instance = {}
 
    def wrapper(*args, **kwargs):
        if cls not in __instance:
            __instance[cls] = cls(*args, **kwargs)
            return __instance[cls]
        else:
            return __instance[cls]
    return wrapper