Python学习--类，继承

[root@localhost /]#
[root@localhost /]# cat cla.py
#!/bin/python
class zhu():
    def __init__(self,chang,kuan,gao):
        self.chang=chang
        self.kuan=kuan
        self.gao=gao
    def tiji(self):
        return self.chang*self.kuan*self.gao
if __name__=='__main__':
    print("aaaaaaaaaa")
[root@localhost /]#

[root@localhost /]# cat class.py
#!/bin/python
import cla
class zlg(cla.zhu):
    def __init__(self,chang,kuan,gao):
        cla.zhu.__init__(self,chang,kuan,gao)
        self.yanse=2
    def area(self):
        return self.chang*self.kuan*2+self.kuan*self.gao*2+self.chang*self.gao*2
haha=zlg(1,2,3)
print haha.yanse
print(haha.area())
print(haha.tiji())
[root@localhost /]#
[root@localhost /]#