MRO 是 method resolution order，即方法解析顺序，其本质是继承父类方法时的顺序表。在 Python 中可以使用内置属性 __mro__ 查看方法的搜索顺序，例如下述代码，重点查看输出部分内容。class A: def run(self): print('AAA')class B: def run(self): print('BBB')class C: def run(self): print('CCC'...
(__class__, <first argument>) super(type) -> unbound super object super(type, obj) -> bound super object; requires isinstance(obj, type) super(type, type2) -> bound super object; requires issubclass(type2, type) Typical use to call a cooperative superclass method: class C(B): def...
<first argument>)super(type) -> unbound super objectsuper(type, obj) -> bound super object; requires isinstance(obj,type)super(type, type2) -> bound super object; requires issubclass(type2,type)Typicaluse to call a cooperative superclass method:classC(B): ...
Return a proxy object that delegates method calls to a parent or sibling class of type. This is useful for accessing inherited methods that have been overridden in a class. The search order is same as that used by getattr() except that the type itself is skipped. The __mro__ attribute ...
Typical use to call a cooperative superclass method: class C(B): def meth(self, arg): super(C, self).meth(arg) 1. 2. 3. 4. 5. 6. 7. 由此可知, super有三种用法, 第一参数总是召唤父类的那个类, 第二参数可缺(返回非绑定父类对象),也可以是实例对象或该类的子类. 最终返回的都是父...
| Typical use to call a cooperative superclass method: | class C(B): | def meth(self, arg): | super().meth(arg) | This works for class methods too: | class C(B): | @classmethod | def cmeth(cls, arg): | super().cmeth(arg) ...
https://python3-cookbook.readthedocs.io/zh_CN/latest/c08/p07_calling_method_on_parent_class....
classA(object):def__init__(self):print('A')classB(object):def__init__(self):print('B') 看上去没啥问题,实际上绝大多数情况下确实没问题,标准库里也有很多类是这么写的。 如果又来了一个人,写了一个同时继承A和B的类,C,问题就来了
string_series_1(_2) A Series of strings each of which is to be compared with its corresponding string in string_series_2(_1). **kwargs Keyword arguments (see below). New in version 0.6.0: each of the high-level functions listed above also has a StringGrouper method counterpart of the...
In the example below, theCarclass (subclass) inherits the attributes and methods from theVehicleclass (superclass): ExampleGet your own Java Server classVehicle{protectedStringbrand="Ford";// Vehicle attributepublicvoidhonk(){// Vehicle methodSystem.out.println("Tuut, tuut!");}}classCarextendsVe...