Python中class的三种继承方法

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class parent(object):           def implicit(self):         print("Parent implicit()")     def override(self):         print("Parent override()")     def altered(self):         print("Parent altered()")           class child(parent):           def override(self):         print("Child override()")     def altered(self):         print("Child,Before Parent altered()")         super(child,self).altered()         print("Child,After Parent altered()")           dad=parent() son=child()   dad.implicit() son.implicit()   dad.override() son.override()   dad.altered() son.altered()

运行结果：

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Parent implicit() Parent implicit() Parent override() Child override() Parent altered() Child,Before Parent altered() Parent altered() Child,After Parent altered()

还可以写成：

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class parent():           def implicit(self):         print("Parent implicit()")     def override(self):         print("Parent override()")     def altered(self):         print("Parent altered()")           class child(parent):           def __init__(self):         self.parent =parent()               def implicit(self):         self.parent.implicit()               def override(self):         print("Child override()")               def altered(self):         print("Child,Before Parent altered()")         super(child,self).altered()         print("Child,After Parent altered()")           dad=parent() son=child()   dad.implicit() son.implicit()   dad.override() son.override()   dad.altered() son.altered()