在没有显式调用的情况下，在子方法之前强制执行父方法

class Parent:
    def __init__(self):
        print("Parent constructor called")

class Child(Parent):
    def __init__(self):
        super().__init__()
        print("Child constructor called")

c = Child()

Parent constructor called
Child constructor called

def call_parent_method(parent_method):
    def wrapper(self, *args, **kwargs):
        parent_method(self)
        return self.child_method(*args, **kwargs)
    return wrapper

class Parent:
    def parent_method(self):
        print("Parent method called")

    @call_parent_method(parent_method)
    def child_method(self):
        print("Child method called")

p = Parent()
p.child_method()

Parent method called
Child method called