类的继承

#!/bin/python
class zhu():
        num=6
        def __init__(self,name,age):
                self.name=name
                self.age=age
        def Student(self):
                print('name=',self.name)
                print('age=',int(self.age))
                print('num=',self.num)
                return self.num
#student=zhu("zhuliguo",18)
#student.Student()
class zhuzhu(zhu):
        def __init__(self,name,age):
                zhu.__init__(self,name,age)
                self.sex="nan"
        def ssex(self):
                print(self.sex)
student=zhuzhu("zhuzhuzhu",22)
core=student.Student()
print(core)
student.ssex()