python動的呼び出し方法

#!/usr/env python
#conding:utf-8
def test():
	classname = "classname"
	method = "echo"
	module = __import__(classname)
	c = getattr(module,classname)
	obj = c()
	mtd = getattr(obj,method)
	mtd()


if __name__ == '__main__':
	test()

#!/usr/env python 
#coding:utf-8
class classname:
 def mod1(self):
 print "call mod1"
 def echo(self):
 print "call eacho"