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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time : 2023/4/12 15:09
# @Author : old tom
# @File : fu_function.py
# @Project : futool-tiny-datahub
# @Desc :
def singleton(cls):
"""
单例装饰器
:param cls:
:return:
"""
_instance = {}
def inner():
if cls not in _instance:
_instance[cls] = cls()
return _instance[cls]
return inner