1 #!/usr/bin/env python
2 # -*- coding:utf-8 -*-
3 # 作者:Presley
4 # 邮箱:1209989516@qq.com
5 # 时间:2018-11-04
6 # 反射使用
7 import sys
8 class WebServer(object):
9 def __init__(self,host,port):
10 self.host = host
11 self.port = port
12 def start(self):
13 print("Server is starting...")
14 def stop(self):
15 print("Server is stopping...")
16 def restart(self):
17 self.stop()
18 self.start()
19
20 def test_run(ins,name):
21 print("running...",name,ins.host)
22
23 if __name__ == "__main__":
24 server = WebServer("localhost",333)
25 '''#方法1
26 # #print(sys.argv[1])
27 # cmd_dic = {
28 # "start":server.start,
29 # "stop":server.stop
30 # }
31 # if sys.argv[1] in cmd_dic:
32 # cmd_dic[sys.argv[1]]()'''
33
34 #1、hasattr,getattr
35 #方法二
36 if hasattr(server,sys.argv[1]):
37 func = getattr(server,sys.argv[1]) #获取server.start方法的内存地址
38 func() #相当于server.start()
39
40 #2、setattr
41 '''
42 setattr(server,"run",test_run) #给实例绑定一个test_run方法,方法名字叫run
43 server.run(server,"wohaoshuai")#绑定的方法调用类中属性需要传入对象名称
44 '''
45 #3、delattr
46 delattr(WebServer,"start")
47 server.restart()#报错
