python 3新式类的多继承

因为我用的是python3，所以所用到的类都是新式类，这里我说的都是新式类，python2类的继承复杂一些，主要有新式类和老式类。python3类（新式类）的继承是是广度优先,实例如下：

class A():
    def __init__(self):
        pass
    def save(self):
        print("This is from A")
class B(A):
    def __init__(self):
        pass
class C(A):
    def __init__(self):
        pass
    def save(self):
        print("This is from C")
class D(B,C):
    def __init__(self):
        pass
fun =  D()
fun.save()

　　执行结果为：

F:devpythonpython.exe F:/pyCharm/code_statistics/Common/try.py
This is from C

Process finished with exit code 0

题外话，python2只在有显式继承了Object的类才是新式类，没有显式继承Object的类是经典类，经典类的多继承是深度优先，如果是经典类，控制台输出应该为：

This is from A