python中对象以及一些函数的应用

#coding:UTF-8
import sys
import inspect
def foo(): pass

class Cat(object):
def __init__(self,name='kitty'):
self.name = name

def sayhi(self):
print self.name

if __name__ == '__main__':
cat = Cat()
cat.sayhi()
hi = Cat("nidfe")
hi.sayhi()

print "*"*20
print hi.name

print dir(hi)
print "*"*20
if hasattr(hi,'name'):
setattr(hi , 'name' , 'pig')
print getattr(hi , 'name')
print hi.name
hi.sayhi()

if isinstance(hi , Cat):
print "tt"*10