python|python super用法 2018-01-28
新式类，经典类
python3之后均称为新式类，默认继承object类
Python2.x版本分为：分新式类与经典类
新式类：每个类都继承于一个基类，可以是自定义类或者其它类，默认承于object
【python|python super用法 2018-01-28】旧式类：不继承object类
mro算法：方法解析顺序
新式类中采用广度算法，经典类中采用深度算法
super 仅用于新式类
super 用法
In Python 3 and above, the syntax for super is:
super().methoName(args)
Whereas the normal way to call super (in older builds of Python) is:
super(subClass, instance).method(args)
单个继承初始化
class MyParentClass(object):def __init__(self):pass
class SubClass(MyParentClass):def __init__(self):MyParentClass.__init__(self)
If we were using Python 2, we would write the subclass like this (using the super function):
class SubClass(MyParentClass):
def __init__(self):
super(SubClass, self).__init__()
The same code is slightly different when writing in Python 3, however.
class MyParentClass():def __init__(self):pass
class SubClass(MyParentClass):def __init__(self):
super()
Now, keep in mind most classes will also have arguments passed to them. The super function will change even more when that happens.
It will look like the following:
class MyParentClass():def __init__(self, x, y):pass
class SubClass(MyParentClass):def __init__(self, x, y):super().__init__(x, y)
In Python 3 and above, the syntax for super is:
super().methoName(args)
Whereas the normal way to call super (in older builds of Python) is:
super(subClass, instance).method(args)
新式类中mro：广度搜索
super的原理：遍历当前类的mro列表，查找含有当前方法的第一个类，找到则用类调用方法，退出 
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