Python中内置函数super()用法示例详解

super([type[, object-or-type]])

super().method(...)

# 等价于：
super(CurrentClass, self).method(...)

@classmethod
def m(cls, ...):
    super().method(...)

# 等价于：
super(CurrentClass, cls).method(...)

class Parent:
    def greet(self):
        print("Hello from Parent")

class Child(Parent):
    def greet(self):
        super().greet()   # 调用父类方法
        print("Hello from Child")

c = Child()
c.greet()

# Hello from Parent
# Hello from Child

class A:
    def __init__(self):
        print("A init")

class B(A):
    def __init__(self):
        super().__init__()  # 调用 A.__init__()
        print("B init")

b = B()
# A init
# B init

class A:
    def greet(self): 
        print("A")

class B(A):
    def greet(self): 
        super().greet()
        print("B")

class C(A):
    def greet(self):
        super().greet()
        print("C")

class D(B, C):
    def greet(self):
        super().greet()
        print("D")

d = D()
d.greet()

# A
# C
# B
# D

class Base:
    def who(self): print("Base.who")

class Sub(Base):
    def who(self):
        print("Sub.who → call super:")
        return super(Sub, self).who()

Sub().who()
# Sub.who → call super:
# Base.who

class A:
    @classmethod
    def hello(cls):
        print("A hello")

class B(A):
    @classmethod
    def hello(cls):
        super().hello()
        print("B hello")

B.hello()

# A hello
# B hello

class A:
    @classmethod
    def ping(cls): print("A.ping")

class B(A):
    @staticmethod
    def call_ping():
        # 显式指定当前类与类型参数
        super(B, B).ping()

B.call_ping()
# A.ping

def __init__(self, *args, **kwargs):
    super().__init__(*args, **kwargs)