class Test(object):
    def __init__(self,a):
        self.a = a
 
    def func1(self):  #調用回調函數
        return self.func2(self.a,self.calls)

    def func2(self,aa,func): #執行回調函數
        return func(aa)


    def calls(self,ss):   #被回調函數
        self.ss = ss+8
        return self.ss


test = Test(8)
 
print(test.func1())

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