python新生类和经典类简单说明
经典类:
#!/usr/bin/env python
#*-* coding:utf-8 *-*
class A():
def __init__(self):
print 'my name is GF'
def test(self):
print 'this is ====A====='
class B(A):
def __init__(self):
print 'my name is BFather'
class C(A):
def __init__(self):
print 'my name is Cfather'
def test(self):
print 'this is ======C======'
class D(B,C):
def __init__(self):
print 'my name is D'
t1 =D()
t1.test()
执行效果:
my name is D
this is ======A======
#继承关系,先找B,如果B没有则找A.(深度优先)
新生类:
#!/usr/bin/env python
#*-* coding:utf-8 *-*
class A(object):
def __init__(self):
print 'my name is GF'
def test(self):
print 'this is ====A====='
class B(A):
def __init__(self):
print 'my name is BFather'
class C(A):
def __init__(self):
print 'my name is Cfather'
def test(self):
print 'this is ======C======'
class D(B,C):
def __init__(self):
print 'my name is D'
t1 =D()
t1.test()
执行结果
my name is D
this is ======C======
#继承关系,先找B,如果B没有则找C(广度优先)
当然,class D(B,C) 这里是先执行B,在执行C的。
小结:经典类深度优先,新生类广度优先。
class A(object):
def __init__(self):
print 'my name is GF'
def test(self):
print 'this is ====A====='
class B(A):
def __init__(self):
print 'my name is BFather'
class C(A):
def __init__(self):
print 'my name is Cfather'
def test(self):
print 'this is ======C======'
class D(B,C):
def __init__(self):
print 'my name is D'
super(D,self).__init__()
t1 =D()
t1.test()
这里执行父类的构造函数,可以使用super方法,这也是新生类的特点。
如果使用经典类的话,那么调用父类的构造函数或者是方法,只能使用父类.方法(self)的方法
小结:新生类是支持super方式调用父类的方法。

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